criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include <bits/stdc++.h>
#define pb push_back
#define int long long
#define mp make_pair
#define inf 1000000007
#define ll long long
using namespace std;
signed main(){
	int n;
	cin>>n;
	vector<int> a;
	for(int i=0;i<n;i++){
		int x;
		cin>>x;
		a.pb(x);
	}
	int lef = 1, rig = n;
	vector<int> b = a;
	for(int i=0;i<n;i++){
	int lef = 1, rig = n;	
	while(rig-lef>1){
		int k = (lef+rig)/2;
		map<int,int> mope;
		set<int> pos;
		bool fl = true;
		int last = a[0];
		for(int i=1;i<n;i++){
			//cout<<3<<endl;
			if(a[i] >= last){
				last = a[i];
				mope[last]++;
				pos.insert(last);
			}
			else{
				/* set<int>::iterator it = pos.upper_bound( a[i] );
				while( it != pos.end()  ){
					mope[*it]=0;
					++it;
				}
				it  = pos.upper_bound( a[i] );
				pos.erase(it,pos.end()); */
				last = a[i];
				mope[last]++;
				pos.insert(last);
			}
			while( mope[last] == k && last>0){
				mope[last] = 0;
				pos.erase(last);
				last --;
				mope[last]++;
				pos.insert(last);
			}
			if(last == 0){
				fl = false;
				goto end;
			}
			/* for(int j=1;j<=last;j++){
				cout<<mope[j]<<" ";
			}
			cout<<endl; */
		}
		end: n=n+0;
		if( fl == true){
			rig = k;
		}
		else{
			lef = k;
		}
	}
	cout<<rig<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:72:2: error: expected '}' at end of input
   72 | }
      |  ^
a.cc:8:14: note: to match this '{'
    8 | signed main(){
      |              ^
Language: C++

#include<iostream>
#include<algorithm>
#include<cstdio>
#include<string>
#include<cstring> 
#include<cassert>
#include<cmath>
#include<sstream>
#include<fstream>
#include<map>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<bitset>
using namespace std;
int a[200005];
int b[200005];
int n;
map<int,int> mp;
bool check(int mid){
	mp.clear();
	for(int i=1;i<n;i++){
		if(a[i]>a[i-1]) continue;
		mp.erase(mp.upper_bound(a[i]),mp.end());
		int j;
		for(j=a[i];j>0;j--){
			if(mp[j]<mid){
				mp[j]++;
				break;
			}
			mp.erase(mp.find(j));
		}
		if(j==0) return 0;
	}
	return 1;
}
int main(){
	scanf("%d",&n);
	for(int i=0;i<n;i++){
		scanf("%d",&a[i]);
	}
	int l=0,r=n,res=-1;
	while(l<=r){
		int mid=l+r>>1;
		if(!check(mid)){
			l=mid+1;
		}
		else {
			res=mid;d-1;
		}
	}
	cout<<res+1;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:33: error: 'd' was not declared in this scope
   50 |                         res=mid;d-1;
      |                                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
void read(int &x){
	char ch=getchar();x=0;
	for (;ch==' '||ch=='\n';ch=getchar());
	for (;ch!=' '&&ch!='\n';x=x*10+ch-'0',ch=getchar());
}
int t;
struct fl{
	int l,r,c;
}str[200004];
void pop_(){
	t--;
}
void push_(fl x){
	str[t]=x;
	t++;
}
int lb(int x){
	int l=-1,r=t;
	while (r>l+1){
		int mid=(l+r)/2;
		if (str[mid].r>=x) r=mid;
		else l=mid;1
	return r;
}
int n;
int s[800004];
int check(int x){
	t=0;
	push_((fl){1,s[1],1});
	for (int i=2;i<=n;i++){
		if (s[i]>s[i-1]){
			if (str[t-1].c==1) str[t-1].r=s[i];
			else push_((fl){s[i-1]+1,s[i],1});
		}else{
			int lb_=lb(s[i]);
			t=lb_+1;
			str[lb_].r=s[i];
			if (t==1 && str[0].c==x) return 0;
			if (str[t-1].c!=x){
				if (str[t-1].l==str[t-1].r){
					str[t-1].c++;
					if (t>1 && str[t-1].c==str[t-2].c) str[t-2].r++,pop_();
				}else{
					str[t-1].r--;
					push_((fl){str[t-1].r+1,s[i],str[t-1].c+1});
				}
				continue;
			}
			if (str[t-2].c!=x){
				if (str[t-2].l==str[t-2].r){
					str[t-2].c++;
					if (str[t-1].c==str[t-2].c) str[t-2].r=str[t-1].r,pop_();
					if (t>1 && str[t-1].c==str[t-2].c) str[t-2].r=str[t-1].r,pop_();
				}else{
					str[t-2].r--;pop_();
					push_((fl){str[t-1].r+1,str[t-1].r+1,str[t-1].c+1});push_((fl){str[t-1].r+1,s[i],x});
					if (str[t-1].c==str[t-2].c) str[t-2].r=str[t-1].r,pop_();
				}
			}
		}
	}
	return 1;
}
int main(){
	read(n);
	for (int i=1;i<=n;i++) read(s[i]);
	int l=0,r=n+1;
	while (r>l+1){
		int mid=(l+r)/2;
		if (check(mid)) r=mid;
		else l=mid;
	}
	cout<<r;
}

Compiler output:
a.cc: In function 'int lb(int)':
a.cc:24:29: error: expected ';' before 'return'
   24 |                 else l=mid;1
      |                             ^
      |                             ;
   25 |         return r;
      |         ~~~~~~               
a.cc:29:17: error: a function-definition is not allowed here before '{' token
   29 | int check(int x){
      |                 ^
a.cc:66:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   66 | int main(){
      |         ^~
a.cc:66:9: note: remove parentheses to default-initialize a variable
   66 | int main(){
      |         ^~
      |         --
a.cc:66:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:66:11: error: a function-definition is not allowed here before '{' token
   66 | int main(){
      |           ^
a.cc:76:2: error: expected '}' at end of input
   76 | }
      |  ^
a.cc:19:14: note: to match this '{'
   19 | int lb(int x){
      |              ^
a.cc:76:2: warning: no return statement in function returning non-void [-Wreturn-type]
   76 | }
      |  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long built[200003],a[200003],n;
bool check(long long num){
	for(long long i=0;i<a[0];i++)built[i]=0;
	long long l=0;
	for(long long i=1;i<n;i++){
		if(a[i]>a[i-1])
		{
			for(long long j=l;j<a[i];j++)
				built[j]=0;
			l=j+1;
		}
		if(a[i]==a[i-1])
			built[a[i]-1]++,
			l=min(l,a[i]);
		if(a[i]<a[i-1])
			built[a[i]-1]++,
			l=min(l,a[i]);
	}
	for(long long j=n-1;j>0;j--)
		if(built[j]>=num)
			built[j-1]+=built[j]/num,
			built[j]%=num;
		if(built[0]>=num)return 0;
	return 1;
}
int main(){
	cin>>n;
	for(long long i=0;i<n;i++)cin>>a[i];
	long long l=1,r=n,ll,rr=-1;
	while(l!=r){
		if(ll==l&&rr==r)break;
		ll=l;rr=r;
		long long mid=(l+r)/2;
		if(check(mid))
			r=mid;
		else
			l=mid+1;
	}
	cout<<l;
}

Compiler output:
a.cc: In function 'bool check(long long int)':
a.cc:12:27: error: 'j' was not declared in this scope
   12 |                         l=j+1;
      |                           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int MOD=1e9+7;
const int INF=1e9;
//const int MOD=998244353;
const long long LINF=1e18;
//template
int N,now,T=200001;
map<int,int> ma;
int dpw[11][200001];
std::vector<int> v(T),w(T),dp(T),subma(T);//w[i]はi番目のmapのそれの容量
/*
v[i-1]<v[i]の場合はその分だけ0を付け足せばいい
v[i-1]==V[i]の場合は末尾に1を追加 mになろうとしたら1繰り上げて本人は0になる
v[i-1]>v[i]の場合は削ってから末尾に1を追加

0文字目に入ってきたらout

このままだと1e9個の容量を用意する必要があるので考える
mapで座圧して容量を差で考える
例えばv[i]で6の次に大きい数が9の場合、９のやつが容量pw(3,m)を持つと考える
*/
int pw(int n,int k){
  //if(k<0)return pw(n,k+MOD-1);
  if(k<0)return INF;
  if(k>5)return INF;
  if(n<=10)return dpw[n][k];
  int res=1;
  while(k--){
    res*=n;
    if(res>1000000)return INF;
    if(res<0)return INF;
  }
  return res;
}
int let;//,rit=200000;
bool can(int m){
  dp[0]=0;
  if(1<let)fill(dp.begin()+1,dp.begin()+let,0);
  //if(rit<subma[0]+1)fill(dp.begin()+rit+1,dp.begin()+subma[0]+1,0);
  //fill(dp.begin()+1,dp.begin()+subma[0]+1,0);//for(int i=1;i<=subma[0];i++)dp[i]=0;
  //if(m<=5){cout<<m<<":";for(int j=0;j<=5;j++)cout<<dp[j]<<" ";cout<<endl;}
  let=1;//,rit=subma[0];
  for(int j=1;j<N;j++){
    if(v[j]>v[j-1]){//fill(dp.begin()+subma[j-1]+1,dp.begin()+subma[j]+1,0);//for(int i=subma[j-1]+1;i<=subma[j];i++)dp[i]=0;
      if(subma[j-1]+1<=min(let,subma[j]+1))fill(dp.begin()+subma[j-1]+1,dp.begin()+min(let,subma[j]+1),0);
      //if(max(rit+1,subma[j-1]+1)<=subma[j]+1)fill(dp.begin()+max(rit+1,subma[j-1]+1),dp.begin()+subma[j]+1,0);
      let=min(let,subma[j-1]+1);
      //rit=max(rit,subma[j]);
    }
    else{
      dp[subma[j]]++;
      now=subma[j];
      while(dp[now]==pw(m,w[now])){
        dp[now]=0;
        dp[--now]++;
      }
      //if(now+1<let)fill(dp.begin()+subma[j]+1,dp.begin()+let,0);
      let=now+1;
    }
    //if(m<=5){cout<<m<<":";for(int j=0;j<=5;j++)cout<<dp[j]<<" ";cout<<endl;}
    if(dp[0])return false;
  }
  return true;
}
//main
signed main(){
  cin>>N;
  for(int i=0;i<N;i++)cin>>v[i];
  bool f=true;for(int i=1;i<N;i++)if(v[i]<=v[i-1])f=false;if(f){cout<<1<<endl;return 0;}
  for(int i=0;i<N;i++)ma[v[i]]=0;
  ma[0]=0;int tmp=-1;int cnt=0;
  for(auto &p:ma){
    if(~tmp)w[cnt]=p.first-tmp;
    tmp=p.first;
    p.second=cnt++;
  }
  for(int i=0;i<N;i++)subma[i]=ma[v[i]];
  w[0]=-1;
  for(int i=2;i<=10;i++){
    dpw[i][0]=1;
    for(int j=1;j<T;j++){
      dpw[i][j]=min(10000000,dpw[i][j-1]*i);
      if(dpw[i][j]==10000000){
        for(int k=j+1;k<T;k++)dpw[i][j]=10000000;
        continue;
      }
    }
  }
  int l=1,r=N+2;
  while(r-l>1){
    m=(l+r)>>1;
    if(can(m))r=m;
    else l=m;
  }
  cout<<r<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:92:5: error: 'm' was not declared in this scope
   92 |     m=(l+r)>>1;
      |     ^
Language: C++

#include <bits/stdc++.h>
const int INF=1e9;
const int MOD=1e9+7;
//const int MOD=998244353;
const long long LINF=1e18;
using namespace std;
#define int long long
#define fin {cout<<"-1"<<endl;return 0;}
//template
int N,K;
std::vector<int> a(223456),v(223456,0),cap(223456,0),ma2p(223456,0);
map<int,int> ma,ma2;
typedef pair<int,int> P;
int pw(int n,int k){
  if(k<0)return 0;
  if(n==0)return 0;
  if(n==1)return 1;
  if(k>=20)return LINF;
  int res=1;
  while(k){
    if(k&1)res*=n;
    n*=n;
    k>>=1;
    if(res>MOD)return res;
    if(res<=0)return LINF;
  }
  return res;
}
bool can(int m){
  for(int i=0;i<ma2p[0];i++)v[i]=1;
  for(int i=1;i<N;i++){
    if(a[i]>a[i-1])v[ma2p[i]]-1]=1;
    else v[ma2p[i]-1]++;
  }
  for(int i=K;i>=1;i--)v[i-1]+=max((v[i]-1)/pw(m,cap[i+1]),0LL);
  if(v[0]>pw(m,cap[1]))return false;
  return true;
}
//main
signed main(){
  cin>>N;
  for(int i=0;i<N;i++)cin>>a[i];
  bool is1=true;
  for(int i=1;i<N;i++)if(a[i-1]>=a[i])is1=false;
  if(is1){cout<<1<<endl;return 0;}
  set<int> s;
  for(int i=0;i<N;i++)s.insert(a[i]);
  s.insert(0);
  std::vector<int> w;
  for(int p:s)w.push_back(p);
  K=w.size();
  for(int i=1;i<K;i++)ma[w[i]]=w[i]-w[i-1];
  for(int i=1;i<K;i++)ma2[w[i]]=i;
  for(auto p:ma2)cap[p.second]=ma[p.first];
  for(int i=0;i<N;i++)ma2p[i]=ma2[a[i]];
  int l=1,r=N;
  while(r-l>1){
    int m=(l+r)/2;
    if(can(m))r=m;
    else l=m;
  }
  cout<<r<<endl;
  //for(int i=0;i<10;i++)cout<<v[i]<<" "<<cap[i]<<endl;
}


Compiler output:
a.cc: In function 'bool can(long long int)':
a.cc:32:32: error: expected ';' before ']' token
   32 |     if(a[i]>a[i-1])v[ma2p[i]]-1]=1;
      |                                ^
      |                                ;
Language: C++

#include <bits/stdc++.h>
const int INF=1e9;
const int MOD=1e9+7;
//const int MOD=998244353;
const long long LINF=1e18;
using namespace std;
#define int long long
#define fin {cout<<"-1"<<endl;return 0;}
//template
int N,K;
std::vector<int> a(223456),v(223456,0),cap(223456,0);
map<int,int> ma,ma2;
typedef pair<int,int> P;
int pw(int n,int k){
  if(k<0)return 0;
  if(n==0)return 0;
  if(n==1)return 1;
  if(k>=20)return LINF;
  int res=1;
  while(k){
    if(k&1)res*=n;
    n*=n;
    k>>=1;
    if(res>MOD)return res;
    if(res<=0)return LINF;
  }
  return res;
}
void add(int i,int m){
  v[i]++;
}
bool can(int m){
  for(int i=0;i<ma2[a[0]];i++)v[i]=1;
  for(int i=1;i<N;i++){
    if(a[i]>a[i-1])v[ma2[a[i]]-1]=1;
    else add(ma2[a[i]]-1,m);
  }
  for(int i=K;i>=1;i--)v[i-1]+=max((v[i]-1)/pw(m,cap[i+1]),0LL);
  if(v[0]>pwi(m,cap[1]))return false;
  return true;
}
//main
signed main(){
  cin>>N;
  for(int i=0;i<N;i++)cin>>a[i];
  bool is1=true;
  for(int i=1;i<N;i++)if(a[i-1]>=a[i])is1=false;
  if(is1){cout<<1<<endl;return 0;}
  set<int> s;
  for(int i=0;i<N;i++)s.insert(a[i]);
  s.insert(0);
  std::vector<int> w;
  for(int p:s)w.push_back(p);
  K=w.size();
  for(int i=1;i<K;i++)ma[w[i]]=w[i]-w[i-1];
  for(int i=1;i<K;i++)ma2[w[i]]=i;
  for(auto p:ma2)cap[p.second]=ma[p.first];
  int l=1,r=N;
  while(r-l>1){
    int m=(l+r)/2;
    if(can(m))r=m;
    else l=m;
  }
  cout<<r<<endl;
  //for(int i=0;i<10;i++)cout<<v[i]<<" "<<cap[i]<<endl;
}


Compiler output:
a.cc: In function 'bool can(long long int)':
a.cc:39:11: error: 'pwi' was not declared in this scope; did you mean 'pw'?
   39 |   if(v[0]>pwi(m,cap[1]))return false;
      |           ^~~
      |           pw
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn=2e5+10;
int n,aaa[maxn],pos[maxn],num[maxn];
int top,ans;
bool check(int ans)
{
    top=0;
    for(int i=2;i<=n;i++)
    if(aaa[i]<=aaa[i-1])
    {
        int x=aaa[i];
        while(top&&pos[top]>x) top--;
        while(top&&pos[top]==x&&num[top]==ans) top--,x--;
        if(x==0) return 0;
        else if(pos[top]<x)
        {
            pos[++top]=x;
            num[top]=2;
            if(ans==1)
                return 0;
            x<=pos[top]
        }
        else num[top]++;
    }
    return 1;
}
int main(int argc, char** argv)
{
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
        scanf("%d",&aaa[i]);
    int l=1,r=n,ans;
    while(l<=r)
    {
        int mid=(l+r)>>1;
        if(check(mid))
            r=mid-1,ans=mid;
        else
            l=mid+1;
    }
    printf("%d\n",ans);
    return 0;
}


Compiler output:
a.cc: In function 'bool check(int)':
a.cc:23:24: error: expected ';' before '}' token
   23 |             x<=pos[top]
      |                        ^
      |                        ;
   24 |         }
      |         ~
Language: C++

#include <iostream>
#include <stdio.h>
#include <vector>
#include <map>
#include <queue>
#include <stack>
using namespace std;
const int N = 200010;
int n, arr[N];
vector< int > d;
int mx = 0;

bool check(int mid) {
	int pre = 0, j = 0, cur = 0, last = 0;
	for (int i = 0;i < (int)d.size();i = j) {
		while (pre > 0 && last < d[i]) {
			last++;
			pre /= 10;
		}
		last = d[i];
		j = i;
		while (j < (int)d.size() && d[i] == d[j])
			j++;
		cur = j - i + 1;
		cur += pre;
		pre /= mid;
	}
	return (pre == 0);
}

int main() {
	//freopen("in.txt", "r", stdin);
	scanf("%d", &n);
	for (int i = 0;i < n;i++) {
		scanf("%d", &arr[i]);
		mx = max(mx, arr[i]);
	}
	for (int i = 1;i < n;i++) {
		if (arr[i] <= arr[i - 1])
			d.push_back(arr[i]);
	}
	if ((int)d.size() == 0) {
		cout << 1 << endl;
		return 0;
	}
	sort(d.begin(), d.end());
	int low = 1, high = n, res = n, mid;
	while (high >= low) {
		mid = (low + high) / 2;
		if (check(mid))
			res = mid, high = mid - 1;
		else
			low = mid + 1;
	}
	cout << res + 1 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   46 |         sort(d.begin(), d.end());
      |         ^~~~
      |         short
Language: C++

#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstring>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

const int MOD = 1e9 + 7;
const int iINF = 1000000000;
const long long int llINF = 1000000000000000000;

using namespace std;
using ll = long long int;
using vv = vector<vector<ll>>;
using vvv = vector<vector<vector<ll>>>;
using edge = struct {
  int to;
  int cost;
};
#define REP(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i, a, b) for (ll i = (a); i < (b); i++)
#define AUTO(i, m) for (auto &i : m)
#define ALL(a) (a).begin(), (a).end()
#define MAX(vec) *std::max_element(vec.begin(), vec.end())
#define MIN(vec) *std::min_element(vec.begin(), vec.end())
#define ARGMAX(vec)                                                            \
  std::distance(vec.begin(), std::max_element(vec.begin(), vec.end()))
#define ARGMIN(vec)                                                            \
  std::distance(vec.begin(), std::min_element(vec.begin(), vec.end()))
#define BIT(n, num) std::bitset<(n)>((num)).to_string()
#define REV(T) greater<T>()
#define PQ priority_queue<ll, vector<ll>, greater<ll>>
#define VVI(a, b, c) vector<vector<ll>>(a, vector<ll>(b, c))
#define VVVI(a, b, c, d)                                                       \
  vector<vector<vector<ll>>>(a, vector<vector<ll>>(b, vector<ll>(c, d)))

typedef pair<ll, ll> Pair;
bool pairCompare(const Pair &firstElof, const Pair &secondElof) {
  return firstElof.second > secondElof.second;
}

ll POW(ll n, ll m) {
  if (m == 0) {
    return 1;
  } else if (m % 2 == 0) {
    ll tmp = POW(n, m / 2);
    return (tmp * tmp) % MOD;
  } else {
    return (n * POW(n, m - 1)) % MOD;
  }
}

int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

int main() {
  ll N;
  cin >> N;
  vector<ll> A(N, 0);
  REP(i, N) cin >> A[i];

  ll left = 1;
  ll right = N;
  bool end = true;
  AUTO(a, A) {
    if (LAST >= a)
      end = false;
  }
  if (end) {
    cout << 1 << endl;
    return 0;
  }

  while (right - left > 1) {
    ll mid = left + (right - left) / 2;
    ll LAST = 0;
    vector<Pair>
        X; //辞書順先頭の文字(0)以外の文字を格納、{先頭から何番目か,記号の種類}
    AUTO(a, A) {
      if (LAST >= a) {
        while (!X.empty() && X.back().first > a)
          X.pop_back();
        X.push_back(make_pair(a + 1, mid));
      }
      LAST = a;
      while (!X.empty() && X.back().second == mid) {
        ll po = X.back().first;
        X.pop_back();
        if (!X.empty() && X.back().first == po - 1) {
          ll yo = X.back().second;
          X.pop_back();
          X.push_back(make_pair(po - 1, yo + 1));
        } else {
          X.push_back(make_pair(po - 1, 1));
        }
      }
    }

    // 最初の桁が0以下だとオーバーフローしている
    if (X.front().first > 0)
      right = mid;
    else
      left = mid;
  }
  cout << right << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:72:9: error: 'LAST' was not declared in this scope
   72 |     if (LAST >= a)
      |         ^~~~
Language: C++

#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstring>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

const int MOD = 1e9 + 7;
const int iINF = 1000000000;
const long long int llINF = 1000000000000000000;

using namespace std;
using ll = long long int;
using vv = vector<vector<ll>>;
using vvv = vector<vector<vector<ll>>>;
using edge = struct {
  int to;
  int cost;
};
#define REP(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i, a, b) for (ll i = (a); i < (b); i++)
#define AUTO(i, m) for (auto &i : m)
#define ALL(a) (a).begin(), (a).end()
#define MAX(vec) *std::max_element(vec.begin(), vec.end())
#define MIN(vec) *std::min_element(vec.begin(), vec.end())
#define ARGMAX(vec)                                                            \
  std::distance(vec.begin(), std::max_element(vec.begin(), vec.end()))
#define ARGMIN(vec)                                                            \
  std::distance(vec.begin(), std::min_element(vec.begin(), vec.end()))
#define BIT(n, num) std::bitset<(n)>((num)).to_string()
#define REV(T) greater<T>()
#define PQ priority_queue<ll, vector<ll>, greater<ll>>
#define VVI(a, b, c) vector<vector<ll>>(a, vector<ll>(b, c))
#define VVVI(a, b, c, d)                                                       \
  vector<vector<vector<ll>>>(a, vector<vector<ll>>(b, vector<ll>(c, d)))

typedef pair<ll, ll> Pair;
bool pairCompare(const Pair &firstElof, const Pair &secondElof) {
  return firstElof.second > secondElof.second;
}

ll POW(ll n, ll m) {
  if (m == 0) {
    return 1;
  } else if (m % 2 == 0) {
    ll tmp = POW(n, m / 2);
    return (tmp * tmp) % MOD;
  } else {
    return (n * POW(n, m - 1)) % MOD;
  }
}

int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

int main() {
  ll N;
  cin >> N;
  vector<ll> A(N, 0);
  REP(i, N) cin >> A[i];

  ll left = 1;
  ll right = N;

  while (right - left > 1) {
    ll mid = left + (right - left) / 2;
    ll LAST = 0;
    vector<Pair>
        X; //辞書順先頭の文字(0)以外の文字を格納、{先頭から何番目か,記号の種類}
    AUTO(a, A) {
      if (LAST >= a) {
        while (!X.empty() && X.back().first > a)
          X.pop_back();
        X.push_back(make_pair(a + 1, mid));
      }
      LAST = a;
      while (!X.empty() && X.back().second == mid) {
        ll po = X.back().first;
        X.pop_back();
        if (!X.empty() && X.back().first == po - 1) {
          ll yo = word.back().second;
          X.pop_back();
          X.push_back(make_pair(po - 1, yo + 1));
        } else {
          X.push_back(make_pair(po - 1, 1));
        }
      }
    }

    // 最初の桁が0以下だとオーバーフローしている
    if (X.front().first > 0)
      right = mid;
    else
      left = mid;
  }
  cout << right << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:87:19: error: 'word' was not declared in this scope
   87 |           ll yo = word.back().second;
      |                   ^~~~
Language: C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <map>
#include <queue>
#include <algorithm>

using namespace std;

void print(vector<int> &vec) {
  for (int i = 0; i < vec.size(); i++) {
    cout << vec[i] << " ";
  }
  cout << endl;
}

int main() {
  int N;
  cin >> N;
  
  vector<int> A(N);
  int a;
  for (int i = 0; i < N; i++) {
    cin >> a[i];
  }
  
  int m = A.size();
  int upper = 0;
  int lower = 0;
  
  vector<int> current(min(A[m - 1], 1005), upper);
  // print(current);
  for (int i = m - 2; i >= 0; i--) {
    vector<int> temp = current;
    
    bool needLower = true;
    for (int j = 0; j < temp.size(); j++) {
      if (temp[j] > lower) {
        needLower = false;
        break;
      }
    }
    
    if (needLower) {
      lower--;
    }
    
    if (A[i] > 1000) {
      continue;
    }
    
    while (temp.size() < A[i]) {
      temp.push_back(lower);
    }
    
    for (int j = A[i] - 1; j >= 0; j--) {
      if (temp[j] > lower) {
        temp[j]--;
        for (int k = A[i] - 1; k > j; k--) {
          temp[k] = upper;
        }
        break;
      }
    }
    current = temp;
    // print(current);
  }
  
  cout << upper - lower + 1 << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:13: error: invalid types 'int[int]' for array subscript
   24 |     cin >> a[i];
      |             ^
Language: C++

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fio ios_base::sync_with_stdio(false)
#define pdl cout << "*" << endl
#define MOD 1000000007
#define INF 1000000000
#define INFLL 1000000000000000000ll
#define mp make_pair
#define pb push_back
#define ff first
#define ss second
#define long int64_t
using namespace std;
using namespace __gnu_pbds;
typedef pair<int, int> pii;
typedef pair<long, long> pll;
typedef priority_queue<pii, vector<pii>, greater<pii>> min_pq;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> OST;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution<> dis(0, INF<<1);
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1> void __f(const char* name, Arg1&& arg1){ cerr << name << " : " << arg1 << endl; }
template <typename Arg1, typename... Args> void __f(const char* names, Arg1&& arg1, Args&&... args)
{ const char* comma = strchr(names + 1, ','); cerr.write(names, comma - names) << " : " << arg1 << " | "; __f(comma+1, args...); }

const int N = 1000001;

struct Q
{
	int l, i;
}

vector<Q> queries[N];
int p[N], t[N];

int main()
{
	fio;
	int n, q;
	cin >> n >> q;
	for(int i=1; i<=n; i++)
		cin >> p[i];
	for(int i=1; i<=q; i++)
		cin >> t[i];
	for(int i=1; i<=q; i++)
	{
		int r;
		cin >> r;
		queries[r].pb({t[i], i});
	}
	stack<pii> s;
	s.pb(mp(INF, 0));
	for(int i=1; i<=n; i++)
	{
		while(s.top().ff < p[i])
			s.pop();
		
		s.push(mp(p[i], i));
	}
	return 0;
}

Compiler output:
a.cc:34:11: error: invalid declarator before 'queries'
   34 | vector<Q> queries[N];
      |           ^~~~~~~
a.cc: In function 'int main()':
a.cc:50:17: error: 'queries' was not declared in this scope
   50 |                 queries[r].pb({t[i], i});
      |                 ^~~~~~~
a.cc:10:12: error: 'class std::stack<std::pair<int, int> >' has no member named 'push_back'
   10 | #define pb push_back
      |            ^~~~~~~~~
a.cc:53:11: note: in expansion of macro 'pb'
   53 |         s.pb(mp(INF, 0));
      |           ^~
Language: C++

#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cctype>
#include <cstring>
#include <climits>
#include <iomanip>
#include <bitset>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <list>
#include <map>
#include <unordered_map>

using namespace std;

const int N = 200005;

int n;
int arr[N];

bool ok(int x) {
  map <int, int> cnt;
  for (int i = 1; i < n; i++) {
    if (arr[i] <= arr[i - 1]) {
      int ce = arr[i];
      while (!cnt.empty() && (--cnt.end())->first > ce) {
        cnt.erase(--cnt.end());
      }
      cnt[ce]++;
      while (cnt[ce] >= x) {
        cnt.erase(ce--);
        cnt[ce]++;
        if (ce == 0) return 0;
      }
    }
  }
  return 1;
}

int main() {
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> arr[i];
  }
  bool ok = 1;
  for (int i = 2; i <= n; i++) {
    ok &= (arr[i] > arr[i - 1]);
  }
  if (ok) {
    cout << 1 << endl;
    return 0;
  }
  int l = 1, r = n + 1, ans = 1;
  while (l <= r) {
    int mid = (l + r) >> 1;
    if (ok(mid)) {
      ans = mid;
      r = mid - 1;
    } else {
      l = mid + 1;
    }
  }
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:63:11: error: 'ok' cannot be used as a function
   63 |     if (ok(mid)) {
      |         ~~^~~~~
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;

public class Main {

    private long n;
    private long[] a;
    private Map<Long,Long> s;
    private long k = 1L;
    
    public static void main(String[] args) {
	Main m = new Main();
	m.solve();
    }

    private void set() {
	try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
	    n = Long.parseLong(br.readLine());
	    a = Arrays.stream(br.readLine().split(" ")).mapToLong(Long::parseLong).toArray();
	    s = new TreeMap<>();
	} catch(IOException e) {
	    e.printStackTrace();
	}
    }

    private void solve() {
	set();
	for (long i=1;i<n;i++) {
	    if (a[i] > a[i-1]) continue;
	    long idx = -1L;
	    for (Iterator<Entry<Long,Long>> it = s.entrySet().iterator();it.hasNext();) {
		Entry<Long,Long> e = it.next();
		long key = e.getKey();
		if (key > a[i]) {
		    it.remove();
		    while (it.hasNext()) {
			it.next();
			it.remove();
		    }
		    break;
		}
		long value = e.getValue();
		if (value < k-1L) idx = key;
	    }
	    long v = s.getOrDefault(a[i],0L) + 1L;
	    if (v < k) { s.put(a[i],v); continue; }
	    if (idx < 0) { s.put(a[i],v); k++ ; continue; }
	    s.put(idx,s.get(idx)+1);
	    for (Iterator<Entry<Long,Long>> it = s.entrySet().iterator();it.hasNext();) {
		if (it.next().getKey() == idx) {
		    while (it.hasNext()) {
			it.next();
			it.remove();
		    }
		}
	    }
	}
	System.out.println(k);
    }
}

Compiler output:
Main.java:35: error: incompatible types: possible lossy conversion from long to int
	    if (a[i] > a[i-1]) continue;
	          ^
Main.java:35: error: incompatible types: possible lossy conversion from long to int
	    if (a[i] > a[i-1]) continue;
	                  ^
Main.java:40: error: incompatible types: possible lossy conversion from long to int
		if (key > a[i]) {
		            ^
Main.java:51: error: incompatible types: possible lossy conversion from long to int
	    long v = s.getOrDefault(a[i],0L) + 1L;
	                              ^
Main.java:52: error: incompatible types: possible lossy conversion from long to int
	    if (v < k) { s.put(a[i],v); continue; }
	                         ^
Main.java:53: error: incompatible types: possible lossy conversion from long to int
	    if (idx < 0) { s.put(a[i],v); k++ ; continue; }
	                           ^
6 errors
Language: C++

bool check( int x )
{
	typedef pair<int, int> P;
	vector<P> S;

	for( int i = 0; i < N - 1; i++ ) {
		if( A[i + 1] > A[i] ) {
			continue;
		}
		if( x <= 1 ) {
			return false;
		}
		int a = A[i + 1];
		while( S.size() && (*(S.end() - 1)).first > a ) {
			S.pop_back();
		}
		if( S.size() && (*(S.end() - 1)).first == a ) {
			(*(S.end() - 1)).second++;
		}
		else {
			S.push_back( make_pair( a, 1 ) );
		}
		while( (*(S.end() - 1)).second == x ) {
			int d = (*(S.end() - 1)).first;
			if( d == 1 ) {
				return false;
			}
			S.pop_back();
			if( S.size() && (*(S.end() - 1)).first == d - 1 ) {
				(*(S.end() - 1)).second++;
			}
			else {
				S.push_back( make_pair( d - 1, 1 ) );
			}
		}
	}
	return true;
}

int main() {
	cin >> N;
	for( int i = 0; i < N; i++ ) {
		cin >> A[i];
	}

	int l = 0;
	int r = N;
	while( r - l > 1 ) {
		int m = ( l + r ) / 2;
		if( check( m ) ) {
			r = m;
		}
		else {
			l = m;
		}
	}
	int ans = r;

	cout << ans << endl;

	return 0;
}


Compiler output:
a.cc: In function 'bool check(int)':
a.cc:3:17: error: 'pair' does not name a type
    3 |         typedef pair<int, int> P;
      |                 ^~~~
a.cc:4:9: error: 'vector' was not declared in this scope
    4 |         vector<P> S;
      |         ^~~~~~
a.cc:4:16: error: 'P' was not declared in this scope
    4 |         vector<P> S;
      |                ^
a.cc:4:19: error: 'S' was not declared in this scope
    4 |         vector<P> S;
      |                   ^
a.cc:6:29: error: 'N' was not declared in this scope
    6 |         for( int i = 0; i < N - 1; i++ ) {
      |                             ^
a.cc:7:21: error: 'A' was not declared in this scope
    7 |                 if( A[i + 1] > A[i] ) {
      |                     ^
a.cc:13:25: error: 'A' was not declared in this scope
   13 |                 int a = A[i + 1];
      |                         ^
a.cc:21:38: error: 'make_pair' was not declared in this scope
   21 |                         S.push_back( make_pair( a, 1 ) );
      |                                      ^~~~~~~~~
a.cc:33:46: error: 'make_pair' was not declared in this scope
   33 |                                 S.push_back( make_pair( d - 1, 1 ) );
      |                                              ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:41:9: error: 'cin' was not declared in this scope
   41 |         cin >> N;
      |         ^~~
a.cc:41:16: error: 'N' was not declared in this scope
   41 |         cin >> N;
      |                ^
a.cc:43:24: error: 'A' was not declared in this scope
   43 |                 cin >> A[i];
      |                        ^
a.cc:59:9: error: 'cout' was not declared in this scope
   59 |         cout << ans << endl;
      |         ^~~~
a.cc:59:24: error: 'endl' was not declared in this scope
   59 |         cout << ans << endl;
      |                        ^~~~
Language: C++

#include <algorithm>
#include <cstdio>
#include <map>
#define N 200005
using namespace std;
typedef long long ll;
 
int n, a[N];
 
inline bool check(ll x) {
    map<ll, ll> num;
    for (int i = 2; i <= n; ++i) {
        if (a[i] > a[i - 1]) continue;
        while (!num.empty() && num.rbegin()->first >= a[i]) {
            num.erase(--num.end());
        }
        for (int j = a[i]; j >1 0; --j) {
            ++num[j];
            if (num[j] == x) num.erase(j);
            else break;
            if (j == 0) return 0;
        }
    }
    return true;
}
 
int main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i)
        scanf("%d", a + i);
      bool flag = true;
    for (int i = 0; i < n - 1; ++i) {
        if (a[i] >= a[i + 1]) {
          flag = false;
          break;
        }
    }
    if (flag) {
        puts("1");
        return 0;
    }
    ll l = 2, r = n + 1, mid, ans;
    while (l <= r) {
        mid = (l + r) >> 1;
        if (check(mid)) r = (ans = mid) - 1;
        else l = mid + 1;
    }
    printf("%lld\n", ans);
    return 0;
}


Compiler output:
a.cc: In function 'bool check(ll)':
a.cc:17:32: error: expected ';' before numeric constant
   17 |         for (int j = a[i]; j >1 0; --j) {
      |                                ^~
      |                                ;
a.cc:17:34: error: expected ')' before ';' token
   17 |         for (int j = a[i]; j >1 0; --j) {
      |             ~                    ^
      |                                  )
a.cc:17:38: error: 'j' was not declared in this scope
   17 |         for (int j = a[i]; j >1 0; --j) {
      |                                      ^
Language: C++

#include<bits/stdc++.h>
using namespace std ;
#define ll long long 
#define fi first 
#define se second 
const int maxn = 2e5 + 100 ;
set < pair < int , int  > > s ;
ll a[maxn] , n, r , l , mid  ;
void add ( int i ) 
{
	if ( s.rbegin()->se!= 0) 
		s.insert ( { a[i-1] + 1 , 0 } ) ;
}
bool check( int x ) 
{
	s.clear() ;
	s.insert ( { 0 , 0 } ) ;
	for ( int i = 1 ; i<n ; i++)
	{
		if ( a[i] > a[i-1] ) 
			add ( i ) ;
		else
		{
			
			while ( s.rbegin()->fi > a[i] ) 
				s.erase( *s.rbegin() ) ;
			if ( s.rbegin()->se != x ) 	
			{	
				int col = s.rbegin()->se ;
				if ( s.rbegin()->fi == a[i]  ) 
					is.erase ( *s.rbegin() ) ;
				if ( s.empty() || (!s.empty() && s.rbegin()->se!=col+1))
					s.insert ( { a[i] , col+1 } ) ;
			}
			else
			{
				int ind = s.rbegin()->fi ;
				if ( ind == 0 )
					return false ;
				s.erase( *s.rbegin() ) ;
				int col = s.rbegin()->se ;
				if ( s.rbegin()->fi == ind-1 ) 
					s.erase ( *s.rbegin() ) ;
				if ( s.empty() || (!s.empty() && s.rbegin()->se != col + 1 ) ) 
					s.insert ( { ind-1 , col+ 1 } ) ;
				s.insert ( {ind , 0 } ) ;			
			}
		}
	}
	return true ;
}
void bs()
{
	l = -1 , r = n+1 ;
	while ( r-l > 1 ) 
	{
		 mid = ( l+r) /2 ;
		if ( check ( mid ) ) 
			r = mid ;
		else
			l = mid ;
	}
	cout << r+1 << endl;
}
int main()
{
	 cin >> n ;
	 for ( int i = 0 ;i<n ; i++)
		 cin >> a[i] , a[i] -- ;
	bs() ; 
}


Compiler output:
a.cc: In function 'bool check(int)':
a.cc:31:41: error: 'is' was not declared in this scope; did you mean 'i'?
   31 |                                         is.erase ( *s.rbegin() ) ;
      |                                         ^~
      |                                         i
Language: C++

#include<bits/stdc++.h>
#include<bits/extc++.h>
#define fi first
#define sf scanf
#define se second
#define pf printf
#define pb push_back
#define mp make_pair
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
#define mem(x,y) memset((x),(y),sizeof(x))
#define fup(i,x,y) for(int i=(x);i<=(y);++i)
#define fdn(i,x,y) for(int i=(x);i>=(y);--i)
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef std::pair<int,int> pii;
using namespace std;
using namespace __gnu_pbds;

const int __=2e5+5;

int n,a[__];
map<int,int>c;

bool check(int res)
{
    fup(i,1,n)
    {
        if(a[i]>a[i-1])continue;
        int pos=0;
        for(int j=a[i];j;--j)
            if(c[j]<res)
            {
                ++c[pos=j];
                break;
            }
        if(!pos)return false;

        c.erase(c.upper_bound(j),c.end());
    }
    c.clear();
    return true;
}

int main()
{
    for(;~sf("%d",&n);)
    {
        fup(i,1,n)
            sf("%d",&a[i]);
        //pf("check(2):%d\n",check(2));
        int ans=n;
        for(int l=0,r=__;l<=r;)
        {
            int mid=(l+r)>>1;
            if(check(mid))
                r=mid-1,ans=mid;
            else l=mid+1;
        }
        pf("%d\n",ans+1);
        c.clear();
    }
    return 0;
}


Compiler output:
a.cc: In function 'bool check(int)':
a.cc:40:31: error: 'j' was not declared in this scope
   40 |         c.erase(c.upper_bound(j),c.end());
      |                               ^
Language: C

#include <stdio.h>

int main(){
	int n,a[n],i,count=0;
  	scanf("%d",&n);
  	for(i=0;i<n;i++){
		scnaf("%d", &a[i]);
    }

  	for(i=0;i<n-1;i++){
      if(a[i]>a[i+1]){
		count++;
      }
    }
  	printf("%d", count);
}


Compiler output:
main.c: In function 'main':
main.c:7:17: error: implicit declaration of function 'scnaf'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    7 |                 scnaf("%d", &a[i]);
      |                 ^~~~~
      |                 scanf
Language: C

#include　<stdio.h>

int main(){
	int n,a[n],i,count=0;
  	scanf("%d",&n);
  	for(i=0;i<n;i++){
		scnaf("%d", &a[i]);
    }

  	for(i=0;i<n-1;i++){
      if(a[i]>a[i+1]){
		count++;
      }
    }
  	printf("%d", count);
}

Compiler output:
main.c:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include　<stdio.h>
      |         ^~
main.c: In function 'main':
main.c:5:9: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |         scanf("%d",&n);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #include　<stdio.h>
main.c:5:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 |         scanf("%d",&n);
      |         ^~~~~
main.c:5:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:7:17: error: implicit declaration of function 'scnaf' [-Wimplicit-function-declaration]
    7 |                 scnaf("%d", &a[i]);
      |                 ^~~~~
main.c:15:9: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   15 |         printf("%d", count);
      |         ^~~~~~
main.c:15:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:15:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:15:9: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

#include <cstdio>
#include <cmath>
#include <algorithm>
#include <queue>
#include <vector>
#include <cstring>
#include <map>
#define MAXN 200005
#define MAXM
#define LL long long
#define LD long double
using namespace std;

int n, a[MAXN];

map<int, int>::iterator it;

bool check(int mid)
{
	map<int, int> num;
	for(int i=2; i<=n; i++)
	{
		if(a[i]>a[i-1]) continue;
		int temp=a[i];
		while(num[temp]>=mid)
		{
			temp--;
			if(temp==0) return false;
		}
		num[temp]++;
		it=num.lower_bound(temp+1);
		while(it!=num.end()) it=num.erase(it);
	}
	return true;
}

int main()
{
	scanf("%d", &n);
	num[0]=0;
	for(int i=1; i<=n; i++) scanf("%d", &a[i]);
	int l=0, r=2e5, ans=0;
	while(l<=r)
	{
		int mid=(l+r)>>1;
		if(check(mid)) ans=mid, r=mid-1;
		else l=mid+1;
	}
	printf("%d\n", ans+1);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:9: error: 'num' was not declared in this scope; did you mean 'enum'?
   40 |         num[0]=0;
      |         ^~~
      |         enum
Language: C++

# include "bits/stdc++.h"
using namespace std;
using LL = long long;
using ULL = unsigned long long;
const double PI = acos(-1);
template<class T>constexpr T INF() { return ::std::numeric_limits<T>::max(); }
template<class T>constexpr T HINF() { return INF<T>() / 2; }
template <typename T_char>T_char TL(T_char cX) { return tolower(cX); };
template <typename T_char>T_char TU(T_char cX) { return toupper(cX); };
typedef pair<LL, LL> pii;
const int vy[] = { -1, -1, -1, 0, 1, 1, 1, 0 }, vx[] = { -1, 0, 1, 1, 1, 0, -1, -1 };
const int dx[4] = { 0,1,0,-1 }, dy[4] = { 1,0,-1,0 };
int popcnt(unsigned long long n) { int cnt = 0; for (int i = 0; i < 64; i++)if ((n >> i) & 1)cnt++; return cnt; }
int d_sum(LL n) { int ret = 0; while (n > 0) { ret += n % 10; n /= 10; }return ret; }
int d_cnt(LL n) { int ret = 0; while (n > 0) { ret++; n /= 10; }return ret; }
LL gcd(LL a, LL b) { if (b == 0)return a; return gcd(b, a%b); };
LL lcm(LL a, LL b) { LL g = gcd(a, b); return a / g*b; };
# define ALL(qpqpq)           (qpqpq).begin(),(qpqpq).end()
# define UNIQUE(wpwpw)        sort(ALL((wpwpw)));(wpwpw).erase(unique(ALL((wpwpw))),(wpwpw).end())
# define LOWER(epepe)         transform(ALL((epepe)),(epepe).begin(),TL<char>)
# define UPPER(rprpr)         transform(ALL((rprpr)),(rprpr).begin(),TU<char>)
# define FOR(i,tptpt,ypypy)   for(LL i=(tptpt);i<(ypypy);i++)
# define REP(i,upupu)         FOR(i,0,upupu)
# define INIT                 std::ios::sync_with_stdio(false);std::cin.tie(0)

int n;
int a[202020];
map<int, int> num;
bool calc(int mid){
    num.erase(ALL(num));
    for(int i = 1;i < n; i++){
        if(a[i - 1] >= a[i]){
            if(num.empty()){
                num[a[i]] = 1;
            }else{
                auto it =num.upper_bound(a[i]);
                num.erase(it, num.end());
                num[a[i]]++;
                int d = a[i];
                while(num[d] == mid){
                    if(d == 1)return false;
                    num.erase(d);
                    d--;
                    num[d]++;
                }
            }
        }
    }
    return true;
}

int lis(vector<LL> &v) {
	vector<LL> ans(v.size(), HINF<LL>());
	for (int i = 0; i < v.size();i++) {
		(*lower_bound(ans.begin(), ans.end(), v[i])) = v[i];
	}
	return lower_bound(ans.begin(), ans.end(), HINF<LL>()) - ans.begin();
}

vector<int> v;

int main(){
    INIT;
    cin >> n;
    REP(i ,n){
        cin >> a[i];
        v.emplace_back(a[i]);
    }
    if(lis(v)==n){
        cout << 1 << endl;
        return 0;
    }
    int ng = 0, ok = n + 1;
    while(ok - ng > 1){
        int mid = (ok + ng)/2;
        if(calc(mid)){
            ok = mid;
        }else{
            ng = mid;
        }
    }
    cout << ok  << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:69:12: error: invalid initialization of reference of type 'std::vector<long long int>&' from expression of type 'std::vector<int>'
   69 |     if(lis(v)==n){
      |            ^
a.cc:52:21: note: in passing argument 1 of 'int lis(std::vector<long long int>&)'
   52 | int lis(vector<LL> &v) {
      |         ~~~~~~~~~~~~^
Language: C++

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define rep(i, a) for (int i = 0; (i) < (int) (a); (i)++)
#define reps(i, a, b) for (int i = (int) (a); (i) < (int) (b); (i)++)
#define rrep(i, a) for (int i = (int) a-1; (i) >= 0; (i)--)
#define rreps(i, a, b) for (int i = (int) (a)-1; (i) >= (int) (b); (i)--)
#define MP(a, b) make_pair((a), (b))
#define PB(a) push_back((a))
#define all(v) (v).begin(), (v).end()
#define PERM(v) next_permutation(all(v))
#define UNIQUE(v) sort(all(v));(v).erase(unique(all(v)), v.end())
#define CIN(type, x) type x;cin >> x
#define TRUE__  "Yes"
#define FALSE__ "No"
#define PRINT(f) if((f)){cout << (TRUE__) << endl;}else{cout << FALSE__ << endl;}
#define RS(N) resize(N)
#define CINV(v, N) do {\
	v.RS(N);\
	rep(i, N) cin >> v[i];\
} while (0);
#define RCINV(v, N) do {\
	v.RS(N);\
	rrep(i, N) cin >> v[i];\
} while (0);

#define MOD 1000000007

void init();
void solve();

signed main()
{
	init();
	solve();
}

int N;
vector<int> A;

void init()
{
	cin >> N;
	CINV(A, N);
}

int X;

inline void add(int x, map<int, int>& m)
{
	m[x]++;
	if (m[x] == X) {
		m.erase(x);
		add(x-1, m);
	}
}

inline bool isok(int x)
{
	X = x;
	int pre = 0;
	map<int, int> m;
	rep(i, N) {
		if (pre < A[i]) {
			pre = A[i];
			continue;
		}
		pre = A[i];
		add(A[i], m);
		while (1) {
			auto itr = --m.end(); int x = *itr.first;
			if (x > A[i]) m.erase(itr);
			else break;
		}
		if (m.count(0)) return false;
	}
	return true;
}

void solve()
{
	bool f = true;
	rep(i, N-1) {
		f &= A[i] < A[i+1];
	}
	if (f) {
		cout << 1 << endl;
		return;
	}
	int ok = 1000000000;
	int ng = 1;
	while (abs(ok - ng) > 1) {
		int mid = (ok + ng) / 2;
		if (isok(mid)) ok = mid;
		else ng = mid;
	}
	cout << ok << endl;
}





Compiler output:
a.cc: In function 'bool isok(int)':
a.cc:73:60: error: 'struct std::_Rb_tree_iterator<std::pair<const int, int> >' has no member named 'first'
   73 |                         auto itr = --m.end(); int x = *itr.first;
      |                                                            ^~~~~
Language: C++

#include <iostream>
#include <stack>
#include <vector>
#include <cassert>
using namespace std;

typedef struct{
  int len;
  int val;
}Number ;

void dump(stack<Number> S){
  stack<Number> tmp;
  while(!S.empty()){
    tmp.push(S.top());
    S.pop();
  }
  
  cout <<"dump: " ;
  while(!tmp.empty()){
    Number top = tmp.top(); tmp.pop();
    assert(top.len > 0);
    for(int i = 0;i < top.len ;i++){
      cout << (char)('a' + top.val);
    }
    cout <<" ";
  }
  cout << endl;
}

void decrease(stack<Number>  & S, int current_length, int target_length){
  while(!S.empty() && current_length > target_length){
    Number top = S.top();
    if (current_length - top.len >= target_length){
      S.pop();
      current_length -= top.len;
    } else if (current_length - top.len < target_length){
      //S.top().len -= current_length - target_length;
      S.top().len = target_length - (current_length - S.top().len);
      break;
    }
  }
}

bool add(stack<Number> & S, const int length, const int lim){
  stack<Number> tmp_stack;
  while(!S.empty()){
    Number top = S.top();
    S.pop();
    if (top.val != lim){
      Number a = {top.len-1, top.val};
      Number b = {1        , top.val+1};
      if (a.len != 0){
	S.push(a);
      }
      S.push(b);
      while(!tmp_stack.empty()){
	Number tmp = tmp_stack.top();
	tmp_stack.pop();
	tmp.val = 1;
	S.push(tmp);
      }
      return true;
      break;
    } else if (top.val == lim){
      Number a = {top.len, top.val};
      tmp_stack.push(a);
    }
  }

  if (S.empty()){
    return false;
  }
  return true;
}

bool solve(const int lim, vector<int> & in){
  stack<Number> S;
  const int n = in.size();
  int val = 1;
  int length = in[0];
  S.push((Number){in[0], 1});
  for(int i = 1;i < n;i++){
    bool fg = true;
    //dump(S);
    if (length < in[i]){
      //cout <<"push" << endl;
      S.push((Number){in[i] - length, 1});
    } else if (length == in[i]){
      //cout << "add" << endl;
      fg = add(S, in[i], lim);
    } else if (in[i] < length){
      //cout <<"decrease add " << endl;
      decrease(S, length, in[i]);
      //dump(S);
      fg = add(S, in[i], lim);
    }
    if (!fg)return false;
    length = in[i];
  }
  return true;
}

int main(){
  int n;
  cin >> n;
  vector<int> in(n);
  for(int i = 0;i < n;i++){
    cin >> in[i];
  }
  int l = 0, r = n;
  while(l < r){
    int mid = (l+r)/2;
    bool can_solve = solve(mid, in);
    if (can_solve){
      r = mid;
    } else {
      l = mid+1;
    }
  }
  assert(solve(mid, l));
  cout << l << endl;
  return 0;
}


Compiler output:
In file included from /usr/include/c++/14/cassert:44,
                 from a.cc:4:
a.cc: In function 'int main()':
a.cc:121:16: error: 'mid' was not declared in this scope
  121 |   assert(solve(mid, l));
      |                ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int n;
int a[200000];

bool ok(int kind) {
  map<int, int> mp;
  for (int i = 1; i < n; ++i) {
    if (a[i - 1] < a[i]) continue;
    if (kind == 1) return false;
    
    int k = a[i];
    while (mp[k] == kind - 1) {
      mp[k] = 0;
      --k;
    }
    if (k <= 0) return false;
    ++mp[k];
    
    mp.erase(mp.upper_bound(idx), mp.end());
  }
  return true;
}

int main() {
  cin >> n;
  for (int i = 0; i < n; ++i) cin >> a[i];
  
  int lo = 0;
  int hi = n;
  while (hi - lo > 1) {
    int mid = (lo + hi) / 2;
    if (ok(mid)) {
      hi = mid;
    } else {
      lo = mid;
    }
  }
  cout << hi << endl;
}

Compiler output:
a.cc: In function 'bool ok(int)':
a.cc:21:29: error: 'idx' was not declared in this scope
   21 |     mp.erase(mp.upper_bound(idx), mp.end());
      |                             ^~~