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

#include<bits/stdc++.h>
#define rep(i, n) for(int i=0; i<int(n); i++)
using namespace std;
typedef long long ll;
const int mod = 1e9 + 7;

int main(){
	int N; cin >> N;
	int A[N];
	vector<int> G[1048576];
	rep(i, N) cin >> A[i];
	int rui[N];
	rui[0] = A[0];
	rep(i, N-1){
		rui[i+1] = rui[i] ^ A[i+1];
	}
	int sum[N];
	rep(i, N){
		G[rui[i]].push_back(i);
		if(i == 0){
			if(rui[i] == 0) sum[i] = 1;
			else sum[i] = 0;
		}else{
			if(rui[i] == 0) sum[i] = sum[i-1] + 1;
			else sum[i] = sum[i-1];
		}
	}
	ll ans = 0, s = 1;
	if(rui[N-1] == 0){
		rep(i, sum[N-1] - 1) s = (s * 2) % mod;
		ans = s;
		for(int i=1; i<1048576; i++){
			if(!G[i].size()) continue;
			int p = G[i].size();
			ll dp[p], su = 0;
// dp[k] で、k番目のiで区切るときのそれ以降の通り数
// su で、dpの累積を保存
			for(int j=p-1; j>=0; j--){
				
			}
		}
	}else{
		ans = (ans + s) % mod;
		rep(i, 1048576){
			if(!G[i].size()) continue;
			ll dp[G[i].size()];
		}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:49:2: error: expected '}' at end of input
   49 | }
      |  ^
a.cc:7:11: note: to match this '{'
    7 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>


using namespace std;

#define SZ(x) (int)(x.size())

using ll = long long;
#define int ll
using ld = long double;
using P = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
const double eps = 1e-10;
const ll MOD = 1000000007;
const int INF = 1000000000;
const ll LINF = 1ll<<50;

template<typename T>
void printv(const vector<T>& s) {
  for(int i=0;i<(int)(s.size());++i) {
    cout << s[i];
    if(i == (int)(s.size())-1) cout << endl;
    else cout << " ";
  }
}

template<typename T1, typename T2>
ostream& operator<<(ostream &os, const pair<T1, T2> p) {
  os << p.first << ":" << p.second;
  return os;
}

#include "../lib/segmenttree/segtree_update_add.hpp"

template<typename T>
T mypow(T x, T n, const T &p) {
  T ret = 1;
  while(n) {
    if(n&1) {
      ret *= x;
      ret %= p;
    }
    x *= x;
    x %= p;
    n>>=1;
  }
  return ret;
}

signed main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(10);

  int n; cin >> n;
  vi a(n);
  vi su0(n+1, 0);
  vi sux(n+1);
  for(int i=0;i<n;++i) {
    cin >> a[i];
  }

  for(int i=0;i<n;++i) {
    sux[i+1] = a[i] ^ sux[i];
    su0[i+1] = su0[i] + (sux[i+1] == 0);
  }

  //printv(sux);
  //printv(su0);

  map<int, vi> mp;
  for(int i=0;i<n;++i) {
    mp[sux[i+1]].push_back(i+1);
  }

  ll res = 0;
  for(auto &e1: mp) {
    int val = e1.first;
    vi v = e1.second;
    //cout << val << endl;

    if(sux[n] != 0 && val != sux[n]) continue;

    if(val == 0) {
      if(su0[n] >= 1) res += mypow<int>(2, su0[n]-1, (int)MOD);
      res %= MOD;
      //cout << res << endl;
      continue;
    }
    
    //cout << "val:" << val << endl;;
    //cout << "v:";
    //printv(v);

    int sz = SZ(v);
    vll init1(sz), init2(sz);
    SegmentTreeUpdAdd<ll> st1(init1), st2(init2);
    
    for(int i=0;i<sz;++i) {
      ll now = 1;
      ll tmp = su0[v[i]-1];
      now += tmp * (st1.query(0, i) % MOD) % MOD;
      now += MOD - (st2.query(0, i) % MOD);
      now %= MOD;
      //cout << now << endl;
      st1.update(i, now);
      st2.update(i, now * tmp % MOD);
      if(i == sz-1 || sux[n] == 0) res += now;
    }
    //cout << res << endl;
  }
  cout << res << endl;
  //cout << (1<<30) % MOD << endl;
}


Compiler output:
a.cc:36:10: fatal error: ../lib/segmenttree/segtree_update_add.hpp: No such file or directory
   36 | #include "../lib/segmenttree/segtree_update_add.hpp"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>


using namespace std;

#define SZ(x) (int)(x.size())

using ll = long long;
#define int ll
using ld = long double;
using P = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
const double eps = 1e-10;
const ll MOD = 1000000007;
const int INF = 1000000000;
const ll LINF = 1ll<<50;

template<typename T>
void printv(const vector<T>& s) {
  for(int i=0;i<(int)(s.size());++i) {
    cout << s[i];
    if(i == (int)(s.size())-1) cout << endl;
    else cout << " ";
  }
}

template<typename T1, typename T2>
ostream& operator<<(ostream &os, const pair<T1, T2> p) {
  os << p.first << ":" << p.second;
  return os;
}

#include "../lib/segmenttree/segtree_update_add.hpp"

template<typename T>
T mypow(T x, T n, const T &p) {
  T ret = 1;
  while(n) {
    if(n&1) {
      ret *= x;
      ret %= p;
    }
    x *= x;
    x %= p;
    n>>=1;
  }
  return ret;
}

signed main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(10);

  int n; cin >> n;
  vi a(n);
  vi su0(n+1);
  vi sux(n+1);
  for(int i=0;i<n;++i) {
    cin >> a[i];
    if(a[i] == 0) su0[i] = 1;
  }

  for(int i=0;i<n;++i) {
    sux[i+1] = a[i] ^ sux[i];
    su0[i+1] = su0[i] + (sux[i+1] == 0);
  }

  //printv(sux);
  //printv(su0);

  map<int, vi> mp;
  for(int i=0;i<n;++i) {
    mp[sux[i+1]].push_back(i+1);
  }

  ll res = 0;
  for(auto &e1: mp) {
    int val = e1.first;
    vi v = e1.second;

    if(sux[n] != 0 && val != sux[n]) continue;

    if(val == 0) {
      res += mypow<int>(2, max(0ll, su0[n]-1), (int)MOD);
      res %= MOD;
      //cout << res << endl;
      continue;
    }
    
    //cout << "val:" << val << endl;;
    //cout << "v:";
    //printv(v);

    int sz = SZ(v);
    vll init1(sz), init2(sz);
    SegmentTreeUpdAdd<ll> st1(init1), st2(init2);
    
    for(int i=0;i<sz;++i) {
      ll now = 1;
      ll tmp = su0[v[i]-1];
      now += tmp * (st1.query(0, i) % MOD) % MOD;
      now += MOD - (st2.query(0, i) % MOD);
      now %= MOD;
      //cout << now << endl;
      st1.update(i, now);
      st2.update(i, now * tmp % MOD);
      if(i == sz-1) res += now;
    }
    //cout << res << endl;
  }
  cout << res << endl;

}


Compiler output:
a.cc:36:10: fatal error: ../lib/segmenttree/segtree_update_add.hpp: No such file or directory
   36 | #include "../lib/segmenttree/segtree_update_add.hpp"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<algorithm>
#include<vector>
#include<string>
using namespace std;
typedef long long ll;
const ll mod=1e9+7;
ll pow(ll x,ll y){
  if(y==0) return 1;
  ll res=pow(x,y/2);
  res*=res;
  res%=mod;
  if(y%2==1) res*=x;
  return res%mod;
}
ll gyaku(ll x){
  return pow(x,mod-2);
}
vector<ll> frac,gfrac;
void set_frac(ll n){
  frac.push_back(1);
  gfrac.push_back(1);
  for(ll i=1;i<=n;i++){
    frac.push_back(frac[i-1]*i%mod);
    gfrac.push_back(gyaku(frac[i]));
  }
}
ll nCr(ll n,ll r){
  ll res=frac[n]*gfrac[r]%mod;
  res*=gfrac[n-r];
  return res%mod;
}

vector<ll> cnt[1200005];
ll ar[500005]={0},rxor[500005]={0};
int main(){
  ll n;
  cin>>n;
  for(int i=1;i<=n;i++) {
    cin>>ar[i];
    rxor[i]=rxor[i-1]^ar[i];
  }
  if(rxor[n]==0){
    ll las=0,num=0;
    ll ans=0;
    vector<ll> comp;
    for(int i=1;i<=n;i++){
      if(rxor[i]==0){
        for(int j=las+1;j<i;j++){
          ll val=rxor[j]^rxor[las];
          cnt[val].push_back(num);
          comp.push_back(val);
        }
        las=i;
        num++;
      }
    }
    ans+=pow(2,num-1);
    ans%=mod;
    sort(comp.begin(),comp.end());
    comp.erase(unique(comp.begin(),comp.end()),comp.end());
    for(int k=0;k<comp.size();k++){
      ll val=comp[k];
      vector<ll> dp,rsum;
      dp.push_back(1);
      rsum.push_back(1);
      for(int i=1;i<cnt[val].size();i++){
        dp.push_back(dp[i-1]+rsum[i-1]*(cnt[val][i]-cnt[val][i-1]));
        rsum.push_back(rsum[i-1]+dp[i]);
      }
      for(int i=0;i<cnt[val].size();i++){
        ans+=dp[i];
        ans%=mod;
      }
    }
    ans%=mod;
    cout<<ans<<endl;
  }
  else{
    ll all_xor=rxor[n];
    ll las=0,num=0;
    while(1) num+++
    for(int i=1;i<=n;i++){
      if((rxor[i]^rxor[las])==all_xor){
        num++;
        las=i;
      }
    }
    cout<<pow(2,(num-1)/2)<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:83:5: error: expected primary-expression before 'for'
   83 |     for(int i=1;i<=n;i++){
      |     ^~~
a.cc:83:17: error: 'i' was not declared in this scope
   83 |     for(int i=1;i<=n;i++){
      |                 ^
Language: C++

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include<bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
template <class T> using Trie = trie<string, null_type, trie_string_access_traits<>, pat_trie_tag, trie_prefix_search_node_update>;

typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int,int> pii;
typedef pair<int,pair<int,int> > ppi;
typedef pair<ld,ld> pdd;

typedef vector<int> vi;
typedef vector<vector<int> > vvi;
typedef vector<ld> vd;
typedef vector<pii> vpii;
typedef vector<ll> vll;
typedef vector<pdd> vdd;
typedef vector<cd> vcd;
typedef vector<ppi> vppi;

#define sz(x) (int)x.size()
#define beg(x) x.begin()
#define en(x) x.end()
#define all(x)  beg(x), en(x)
#define resz(x,a)  x.resize(a)
#define pb push_back
#define as(x,a) x.assign(a)

#define F0R(i,a) for(int i=0;i<(a);++i)
#define FOR(i,a,b) for(int i=a;i<(b);++i)
#define FORD(i,a,b) for(int i=(b)-1;i>=(a);--i)
#define F0RD(i,a) for(int i=(a)-1;i>=0;--i)
#define trav(a,x) for(auto& a : x)

#define fi first
#define se second
#define mp make_pair


#define lb lower_bound
#define ub upper_bound

const int mod = 1000000007;
const ll oo = 1e18;
const ld pi= acos(-1);

template<class T> void chmax(T&a, T b)  {a=max(a,b);}
template<class T> void chmin(T&a, T b)  {a=min(a,b);}
template<class T> T gcd(T a, T b)  {return b==0 ? a : gcd(b,a%b);}
template<class T> T lcm(T a, T b)  {return a*(b/gcd(a,b));}

int n;
vi v, f, ff, last;
int add(int x, int y)
{
    ll res=(ll)x+y;
    if(res>=mod)  res-=mod;
    return res;
}
int main()
{
    //freopen("inp","r",stdin);
    scanf("%d",&n);
    v.resize(n);
    int val=0, ans=1, time=0, ma=0;
    for(int i=0;i<n;++i)   scanf("%d",&v[i]),val^=v[i],chmax(ma,val);
    f.resize(ma+1,1);ff.resize(ma+1,0);last.resize(ma+1,0); val=0;
    for(int i=0;i<n;++i)
    {
        val^=v[i];
        if(val) f[val]+=(0ll+(time-last[val])*ff[val]%mod),ff[val]=add(f[val],ff[val),last[val]=time;
        else ans=add(ans,ans),++time;
    }
    if(val)  cout<<f[val];
    else
    {
        ans=(1ll*ans*(mod+1)>>1)%mod;
        for(int i=1;i<ma+1;++i)  ans=add(ans,ff[i]);
        cout<<ans;
    }
    return 0;
}




Compiler output:
a.cc: In function 'int main()':
a.cc:83:85: error: expected ']' before ')' token
   83 |         if(val) f[val]+=(0ll+(time-last[val])*ff[val]%mod),ff[val]=add(f[val],ff[val),last[val]=time;
      |                                                                                     ^
      |                                                                                     ]
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < n; i++)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
const double EPS = 1e-9;
const ll MOD = 1000000007;
const int inf = 1 << 30;
const ll linf = 1LL << 60;
const double PI = 3.14159265358979323846;

ll n;
ll a[500000];
ll sum[500000];
ll zero[500001];
ll dp[500001][2];
bool saw[500001];
map<int, vector<int>> m;

int main() {
    cin >> n;
    rep(i,n) cin >> a[i];
    if (n == 1) {
        cout << 1 << endl;
        return 0;
    }
    sum[0] = a[0];
    for (int i = 1; i < n; i++) sum[i] = sum[i-1] ^ a[i];

    if (sum[n-1] != 0) {
        dp[0][1] = 0; dp[0][0] = 1;
        int j = 0;
        rep(i,n-1) {
            if (sum[i] == sum[n-1]) {
                dp[j+1][1] = (dp[j][0] + dp[j][1] + 1) % MOD;
                dp[j+1][0] = dp[j][0];
                j++;
            } else if (sum[i] == 0) {
                dp[j+1][1] = dp[j][1];
                dp[j+1][0] = (dp[j][0] + dp[j][1]) % MOD;
                j++;
            }
        }
        cout << ans << endl;
        return 0;
    }
    rep(i,n) if (sum[i] == 0) zero[i]++;
    for (int i = 1; i <= n; i++) zero[i] += zero[i-1];
    rep(i,n-1) m[sum[i]].push_back(i);
    ll ans = 0;
    bool ex = false;
    for (auto it = m.begin(); it != m.end(); it++) {
        if ((*it).first == 0) {
            ex = true;
            ll hoge = 1;
            rep(i,(*it).second.size()) hoge = hoge * 2 % MOD;
            ans = (ans + hoge) % MOD;
            continue;
        }
        vector<int> v = (*it).second;
        dp[0][1] = 1; dp[0][0] = 0;
        int j = 0;
        for (int i = 1; i < v.size(); i++) {
            dp[j+1][1] = dp[j][1];
            dp[j+1][0] = (dp[j][0] + dp[j][1] * (zero[v[i]] - zero[v[i-1]])) % MOD;
            j++;
            dp[j+1][0] = dp[j][0];
            dp[j+1][1] = (dp[j][0] + dp[j][1] + 1) % MOD;
            j++;
        }
        ans = (ans + dp[j][1]) % MOD;
    }
    if (!ex) ans = (ans + 1) % MOD;
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   46 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C

long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
main(a)
{
for(gets(D);i<1<<20;)D[i++]=1;
for(;~scanf("%d",&a);c[x]=p){
	(P[x]+(D[x]=(D[x]+P[x]*(p-c[x]))%M))%M
	P[x^=a]=x||(p++,s=s*2%M);
}
for(;--i;)s+=P[i];
printf("%d",x?D[x]:s%M);
}


Compiler output:
main.c:1:40: warning: data definition has no type or storage class
    1 | long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
      |                                        ^
main.c:1:40: error: type defaults to 'int' in declaration of 'i' [-Wimplicit-int]
main.c:1:42: error: type defaults to 'int' in declaration of 'x' [-Wimplicit-int]
    1 | long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
      |                                          ^
main.c:1:44: error: type defaults to 'int' in declaration of 'p' [-Wimplicit-int]
    1 | long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
      |                                            ^
main.c:1:46: warning: data definition has no type or storage class
    1 | long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
      |                                              ^
main.c:1:46: error: type defaults to 'int' in declaration of 'c' [-Wimplicit-int]
main.c:2:1: error: return type defaults to 'int' [-Wimplicit-int]
    2 | main(a)
      | ^~~~
main.c: In function 'main':
main.c:2:1: error: type of 'a' defaults to 'int' [-Wimplicit-int]
main.c:4:5: error: implicit declaration of function 'gets' [-Wimplicit-function-declaration]
    4 | for(gets(D);i<1<<20;)D[i++]=1;
      |     ^~~~
main.c:5:7: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 | for(;~scanf("%d",&a);c[x]=p){
      |       ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | long M=1e9+7,D[1<<20],P[1<<20],s=5e8+4;i,x,p;c[1<<20];
main.c:5:7: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 | for(;~scanf("%d",&a);c[x]=p){
      |       ^~~~~
main.c:5:7: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:6:47: error: expected ';' before 'P'
    6 |         (P[x]+(D[x]=(D[x]+P[x]*(p-c[x]))%M))%M
      |                                               ^
      |                                               ;
    7 |         P[x^=a]=x||(p++,s=s*2%M);
      |         ~                                      
main.c:10:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   10 | printf("%d",x?D[x]:s%M);
      | ^~~~~~
main.c:10:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:10:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:10:1: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

import java.util.*;

public class Main {
  public static void main(String[] args) {
    long MOD = (long)Math.pow(10, 9) + 7;
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
    }
    int[] b = new int[n + 1];
    b[0] = 0;
    for(int i = 0; i < n; i++) {
      b[i + 1] = b[i] ^ a[i];
    }
    long ans = 0;
    if(b[n] != 0) {
      int p = b[n];
      long[] dp1 = new long[n + 1];
      long[] dp2 = new long[n + 1];
      dp1[0] = 1;
      dp2[0] = 0;
      for(int i = 1; i < n + 1; i++) {
        if(b[i] == 0) {
          dp1[i] = (dp1[i - 1] + dp2[i - 1]) % MOD;
        } else {
          dp1[i] = dp1[i - 1];
        }
        if(b[i] == p) {
          dp2[i] = (dp2[i - 1] + dp1[i - 1]) % MOD;
        } else {
          dp2[i] = dp2[i - 1];
        }
      }
      ans = (dp2[n] - dp2[n - 1] + MOD) % MOD;
    } else {
      long kosuu = 0;
      long[] q = new long[n + 1];
      q[0] = 1;
      for(int i = 1; i < n + 1; i++) {
        if(b[i] == 0) {
          q[i] = q[i - 1] + 1;
        } else {
          q[i] = q[i - 1];
        }
      }
      kosuu = q[n - 1] - q[0];
      long t = 1;
      for(long i = 0; i < kosuu; i++) {
        t = (t * 2) % MOD;
      }
      ans = t;
      HashMap<Integer, ArrayList<Integer>> map = new HashMap<Integer, ArrayList<Integer>>();
      for(int i = 1; i < n; i++) {
        if(b[i] != 0) {
          if(map.containsKey(b[i])) {
            ArrayList<Integer> list = map.get(b[i]);
            list.add(i);
            map.put(b[i], list);
          } else {
            ArrayList<Integer> list = new ArrayList<Integer>();
            list.add(i);
            map.put(b[i], list);
          }
        }
      }
      for(int p : map.keySet()) {
        ArrayList<Integer> list = map.get(p);
        int x = list.size();
        long[] dp1 = new long[x];
        long[] dp2 = new long[x];
        dp1[0] = 1;
        dp2[0] = 1;
        for(int i = 1; i < x; i++) {
          int k = list.get(i);
          int s = list.get(i - 1);
          long w = q[k] - q[s];
          long m = (dp1[i - 1] * w) % MOD;
          dp1[i] = (dp1[i - 1] + m + dp2[i - 1]) % MOD;
          dp2[i] = (m + dp2[i - 1]) % MOD;
        }
        ans = (ans + dp1[x - 1]) % MOD;
      }
    }
    System.out.println(ans);
  }
}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C++

#include <algorithm>
#include <array>
#include <bitset>
#include <chrono>
#include <climits>
#include <cmath>
#include <cstdio>
#include <functional>
#include <iomanip>
#include <iostream>
#include <random>
#include <stack>
#include <string>
#include <vector>
using namespace std;
typedef long long ll;
constexpr ll MOD = 1000000007;

uint N;
vector<int> sum, zero;
vector<int> get_zero(const vector<int>& l)
{
	vector<int> z(l.size() - 1);
	for (uint i = 0; i + 1 < l.size(); i++) z[i] = zero[l[i + 1]] - zero[l[i]];
	return z;
}
map<int, vector<int>> indexes(const vector<int>& x)
{
	map<int, vector<int>> dic;
	for (uint i = 0; i < x.size(); i++) dic[x[i]].emplace_back(i);
	return dic;
}
vector<ll> calc(const vector<int>& zs)
{
	auto L = zs.size();
	vector<ll> dp(L + 1, 1);
	ll sum = 1;
	for (uint j = 0; j < L; j++)
	{
		dp[j + 1] = (dp[j] + zs[j] * sum % MOD) % MOD;
		sum = (sum + dp[j + 1]) % MOD;
	}
	return dp;
}
ll pow(ll a, ll b, ll mod)
{
	ll p = 1, x = a;
	while (b > 0)
	{
		if ((b & 1L) == 1L) p = p * x % mod;
		b >>= 1;
		x = x * x % mod;
	}
	return p;
}

int main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);
	cin >> N;
	vector<int> A(N);
	for (uint i = 0; i < N; i++) cin >> A[i];
	sum = vector<int>(N + 1, 0);
	for (uint i = 0; i < N; i++) sum[i + 1] = sum[i] ^ A[i];
	zero = vector<int>(N + 2, 0);
	for (uint i = 0; i <= N; i++) zero[i + 1] = zero[i] + (sum[i] == 0 ? 1 : 0);
	auto dic = indexes(sum);
	if (sum[N]) cout << calc(get_zero(dic[sum[N]])).back() << endl;
	else
	{
		ll ans = pow(2, zero[N + 1] - 2, MOD);
		for (auto&& x: dic) if (x.first) for (auto v : calc(get_zero(x.second))) ans += v;
		cout << ans % MOD << endl;
	}
	cout << flush;
	return 0;
}


Compiler output:
a.cc:27:1: error: 'map' does not name a type
   27 | map<int, vector<int>> indexes(const vector<int>& x)
      | ^~~
a.cc: In function 'int main()':
a.cc:68:20: error: 'indexes' was not declared in this scope
   68 |         auto dic = indexes(sum);
      |                    ^~~~~~~
Language: C++

#include<iostream>
#include <vector>
#include <cmath> 
using namespace std;
long long solve(int first, int N, vector<int>& A, vector<int>& agg){
  if(first==N)
    return 1;
  if(agg[N]!=0 || agg[N]!=unit)
    return 0;
  int unit=agg[first];
  if(unit!=0){
    long long zero = 0;
    long long other = 1;
    for (int i = first+1; i < N; i++)
    {
      if(agg[i]==0){
        zero += other;
        zero %= 1000000007;
      }
      if(agg[i]==unit){
        other += zero;
        other %= 1000000007;
      }
    }
    if(agg[N]==0)
      return other;
    if(agg[N]==unit)
      return zero;
    return 0;
  }else{
    long long zero = 1;
    for (int i = first+1; i < N; i++)
    {
      if(agg[i]==0){
        zero += zero;
        zero %= 1000000007;
      }
    }
    if(agg[N]==0)
      return zero;
    return 0;
  }
}
int main(){
  int N;
  cin >> N;
  vector<int> A(N);
  for(auto& a: A)
  {
    cin >> a;
  }
  vector<int> agg(N+1);
  agg[0] = 0;
  for (int i = 0; i < N; i++)
  {
    agg[i+1] = agg[i] ^ A[i];
  }
  long long sum = 0;
  for (int i = 1;i<=N;i++){
    auto ret=solve(i, N, A, agg);
    // cout<<i<<" "<<agg[i]<<" "<<ret<<endl;
    sum += ret;
    sum %= 1000000007;
  }
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'long long int solve(int, int, std::vector<int>&, std::vector<int>&)':
a.cc:8:27: error: 'unit' was not declared in this scope; did you mean 'uint'?
    8 |   if(agg[N]!=0 || agg[N]!=unit)
      |                           ^~~~
      |                           uint
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <unordered_map>
#include <set>

typedef long long ll;
int N;
std::vector<int> A;
std::vector<int> B;

class MyPow {
  private:
  typedef long long ll;
  std::unordered_map<ll, ll> memo;
  ll a;

  public:
  ll MOD = LLONG_MAX;

  MyPow ( ll a_ ) : a(a_) {
    memo[0] = 1 % MOD;
    memo[1] = a % MOD;
  }

  ll power ( ll p ) {
    if ( memo.count(p) != 0 ) return memo[p];
    return memo[p] = ((power(p/2)%MOD) * (power(p-p/2)%MOD)) % MOD;
  }
};


ll do_dp ( int X ) {
  std::vector<std::unordered_map<int,ll>> dp(N+1);
  for(int i=0; i<N+1; i++) {
    dp[i][0] = 0;
    dp[i][X] = 0;
  }

  dp[0][0] = 1;
  dp[0][X] = 0;
  for(int i=1; i<=N; i++){
    if ( i == N ) {
      if ( B[i] == 0 ) {
        dp[i][0] = dp[i-1][X];
        dp[i][X] = dp[i-1][X];
      }
      else if ( B[i] == X ) {
        dp[i][X] = dp[i-1][0];
        dp[i][0] = dp[i-1][0];
      }
      continue;
    }
    if ( B[i] == 0 ) {
      dp[i][0] = dp[i-1][0] + dp[i-1][X];
      dp[i][X] = dp[i-1][X];
    }
    else if ( B[i] == X ) {
      dp[i][X] = dp[i-1][0] + dp[i-1][X];
      dp[i][0] = dp[i-1][0];
    }
    else {
      dp[i][X] = dp[i-1][X];
      dp[i][0] = dp[i-1][0];
    }
  }

  return dp[N][B[N]];
}

constexpr ll mod = 1000000007;

int main (void) {
  std::cin >> N;

  A.resize(N);
  for(int i=0; i<N; i++) std::cin >> A[i];

  B.resize(N+1);
  B[0] = 0; B[1] = A[0];
  for(int i=1; i<N; i++) B[i+1] = (B[i]^A[i]);

  std::set<int> S;
  for(int i=0; i<=N; i++) S.insert(B[i]);

  if ( B[N] != 0 ) std::cout << do_dp(B[N]) << std::endl;
  else {
    ll ans = 0;
    for(auto itr = S.begin(); itr != S.end(); ++itr){
      if ( *itr != 0 ) {
        ans += (do_dp(*itr) % mod) ;
        ans %= mod;
      }
      else {
        int count = 0;
        for(int i=0; i<=N; i++) if ( B[i] == 0 ) count++;
        MyPow p(2); p.MOD = mod;
        ans += p.power(count-2);
        ans %= mod;
      }
    }
    std::cout << ans << std::endl;
  }
  return 0;
}

Compiler output:
a.cc:21:12: error: 'LLONG_MAX' was not declared in this scope
   21 |   ll MOD = LLONG_MAX;
      |            ^~~~~~~~~
a.cc:8:1: note: 'LLONG_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    7 | #include <set>
  +++ |+#include <climits>
    8 |
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;

ll MOD = 1000000007;
ll A[1048576];
ll C[1048576];
ll arr[1048576][2];
int zero_update[1048576];

ll power_mod(ll a,ll n){
	if(n == 0){
		return 1;
	}
	ll x = power_mod(a,n/2);
	x = x*x;
	x %= MOD;
	return (n%2 == 0 ? x : (a*x)%MOD);
}

int main(){
	int zero_cnt = 0;
	int U = 1048576;
	int N;
	cin >> N;
	for(int i=0;i<N;i++){
		cin >> A[i];
		if(i == 0){
			C[i] = A[i];
		} else {
			C[i] = C[i-1] ^ A[i];
		}
	}
	for(int i=0;i<U;i++){
		arr[i][0] = 1;
	}
	
	for(int i=0;i<N;i++){
		int c = C[i];
		if(c == 0){
			zero_cnt++;
			continue;
		}
		int n = zero_cnt - zero_update[c];
		int a = arr[c][0];
		int b = arr[c][1];
		int x = a + n*b;
		int y = b;
		a = x;
		b = a+b;
		a %= MOD;
		b %= MOD;
		arr[c][0] = a;
		arr[c][1] = b;
	}
	ll answer = 0;
	int final = C[N-1];
	if(final != 0){
		answer = arr[final][0];
	} else {
		answer = 0;
		for(int i=1;i<U;i++){
			answer += arr[i,1];
			answer %= MOD;
		}
		answer += power_mod(2,zero_cnt-1);
		answer %= MOD;
	}
	cout << answer << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:63:32: error: invalid conversion from 'll*' {aka 'long long int*'} to 'll' {aka 'long long int'} [-fpermissive]
   63 |                         answer += arr[i,1];
      |                         ~~~~~~~^~~~~~~~~~~
      |                                |
      |                                ll* {aka long long int*}
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;

ll MOD = 1000000007;
ll A[1048576];
ll C[1048576];
ll arr[1048576][2];
int zero_update[1048576];

ll power_mod(ll a,ll n){
	if(n == 0){
		return 1;
	}
	ll x = power_mod(a,n/2);
	x = x*x;
	x %= MOD;
	return (n%2 == 0 ? x : (a*x)%MOD);
}

int main(){
	int zero_cnt = 0;
	int U = 1048576;
	int N;
	cin >> N;
	for(i=0;i<N;i++){
		cin >> A[i];
		if(i == 0){
			C[i] = A[i];
		} else {
			C[i] = C[i-1] ^ A[i];
		}
	}
	for(i=0;i<U;i++){
		arr[i][0] = 1;
	}
	
	for(i=0;i<N;i++){
		int c = C[i];
		if(c == 0){
			zero_cnt++;
			continue;
		}
		int n = zero_cnt - zero_update[c];
		int a = arr[c][0];
		int b = arr[c][1];
		int x = a + n*b;
		int y = b;
		a = x;
		b = a+b;
		a %= MOD;
		b %= MOD;
		arr[c][0] = a;
		arr[c][1] = b;
	}
	ll answer = 0;
	int final = C[N-1];
	if(final != 0){
		answer = arr[final][0];
	} else {
		answer = 0;
		for(i=1;i<U;i++){
			answer += arr[i,1];
			answer %= MOD;
		}
		answer += power_mod(2,zero_cnt-1);
		answer %= MOD;
	}
	cout << answer << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:13: error: 'i' was not declared in this scope
   26 |         for(i=0;i<N;i++){
      |             ^
a.cc:34:13: error: 'i' was not declared in this scope
   34 |         for(i=0;i<U;i++){
      |             ^
a.cc:38:13: error: 'i' was not declared in this scope
   38 |         for(i=0;i<N;i++){
      |             ^
a.cc:62:21: error: 'i' was not declared in this scope
   62 |                 for(i=1;i<U;i++){
      |                     ^
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)  
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define ll long long
#define pb(a) push_back(a)
#define INF 999999999
#define MOD 1000000007
using namespace std;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
typedef pair<int, P> PP;
typedef pair<ll, LP> LPP;

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

int gcd(int a,int b){return b?gcd(b,a%b):a;}

ll modpow(ll n,ll k){
  if(k == 1){
    return n;
  }else if(k == 0){
    return 1;
  }else if(k%2==0){
    ll memo = modpow(n,k/2)%MOD;
    return memo*memo%MOD;
  }else{
    return n * modpow(n,k-1)%MOD;
  }
}



int main(){

  ll n;
  cin>>n;
  ll a[n];
  REP(i,n){
    cin>>a[i];
  }
  ll satan[n];
  ll utan[n];
  satan[0] = a[0];
  utan[n-1] = a[n-1];
  for(int i=1;i<n;i++){
    satan[i] = a[i] ^ satan[i-1];
    utan[n-i-1] = a[n-i-1] ^ utan[n-i];
  }

  //cout<<satan[n-1]<<endl;
  ll ans = 0;
  if(satan[n-1]!=0){
    ll count = 0;
    ll x = satan[n-1];
    bool b = false;
    REP(i,n){
      if(satan[i]==x){
        if(b==false)count++;
        b = true;
      }else if(satan[i] == 0){
        if(b==true)count++;
        b = false;
      }
    }
    //cout<<count<<endl;
    ans += modpow(2,count-1)%MOD;
  }else{
    ll zeroCount = 0;
    map<ll,pair<int,bool>> m;
    vector<ll> v;

    REP(i,n){
      ll now = satan[i];
      if(now != 0){
        auto itr = m.find(now);        // "xyz" が設定されているか？
        if( itr != m.end() ) {
       // 設定されている場合の処理
          if(m[now].second==false)m[now].first++;

        } else {
       // 設定されていない場合の処理
          m[now].first += 1;
        }
        m[now].second = true;
        v.pb(now);

      }else{
        REP(i,v.size()){
          if(m[now].second==true)m[v[i]].first++;
          m[v[i].second = false];
        }
      }
    }
    for(auto itr = m.begin(); itr != m.end(); ++itr) {
        ans += modpow(2,itr.second.first-1)%MOD;
      }
  }

  cout<<ans<<endl;
 

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:95:18: error: request for member 'second' in 'v.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
   95 |           m[v[i].second = false];
      |                  ^~~~~~
a.cc:100:29: error: 'struct std::_Rb_tree_iterator<std::pair<const long long int, std::pair<int, bool> > >' has no member named 'second'
  100 |         ans += modpow(2,itr.second.first-1)%MOD;
      |                             ^~~~~~
Language: C++

#include <stdio.h>
#include <iostream>
#include <vector>
#include <string>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <math.h>
#include <algorithm>
using namespace std;
using ll = long long;
const double EPS = 1e-10;
const ll MOD = 7+(1e+9);

int main(){
  ll n;
  ll ans=0;
  cin>>n;
  vector<ll>v(n,0);
  ll x=0;
  for(ll i=0;i<n;i++){
    cin>>v[i];
    x=x^v[i];
  }

  if(x!=0){
    ll tmp=0;
    vector<ll>z;
    for(ll i=0;i<n;i++){
      tmp=tmp^v[i];
      if(tmp==0)z.push_back(0);
      if(tmp==x){
        z.push_back(1);
        tmp=0;
      }
    }
    vector<vector<ll> >p(2,vector<ll>(z.size(),0));
    if(z.size()==1){
      cout<<1<<endl;
      return 0;
    }
    p[z[0]][0]=1;
    for(ll i=1;i<z.size();i++){
      if(z[i]==0){
        p[0][i]+=p[0][i-1]+p[1][i-1];
        p[1][i]+=p[1][i-1];
        p[0][i]%=MOD;
        p[1][i]%=MOD;
      }
      else{
        p[1][i]+=p[0][i-1]+p[1][i-1];
        p[0][i]+=p[1][i-1];
        p[0][i]%=MOD;
        p[1][i]%=MOD;
      }
    }
    ans=p[1][z.size()-1];
    cout<<ans<<endl;
  }
  else{
    ll tmp=0;
    vector<ll>z;
    for(ll i=0;i<n;i++){
      tmp=tmp^v[i];
      if(tmp==0)z.push_back(0);
    }
    vector<vector<ll> >v(2,vector<ll>(z.size(),0));
    if(z.size()==1){
      ans+=1;
    }
    else if(z.size()==2){
      ans+=3;
    }
    else{
      p[0][0]=1;
      p[1][0]=1;
      for(ll i=1;i<z.size();i++){
        p[0][i]=p[0][i-1]+p[1][i-1];
        p[1][i]=p[0][i-1]+p[1][i-1];
        p[0][i]%=MOD;
        p[1][i]%=MOD;
      }
      ans+=p[1][z.size()-1];
    }
    cout<<ans<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:76:7: error: 'p' was not declared in this scope
   76 |       p[0][0]=1;
      |       ^
Language: C++

#include<iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <cmath>
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
ll M = 1000000007

ll power(ll n, ll a){
  ll res = 1;
  for(ll i=0;i<a;i++) res = (res*a)%M;

  return res;
}

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

  int array[N][21];
  int XOR[N+1][21];
  for(int i=0;i<N;i++){
    for(int k=20;k>=0;k--){
        array[i][k] = 0;
        XOR[i+1][k] = 1;
    }
  }

  for(int i=0;i<N;i++){
    for(int k=20;k>=0;k--){
      if(A[i]&(1<<k)) array[i][k] = 1;
    }
  }

  for(int i=0;i<N;i++){
    for(int k=20;k>=0;k--){
      if(array[i][k]==1) XOR[i+1][k] = 1 - XOR[i][k];
    }
  }

  bool Acheck = true;
  for(int k=0;k<=20;k++){
    if(array[N-1][k]!=0){
      Acheck = false;
    }
  }

  ll ans;

  if(Acheck){
    int cnt = 0;
    for(int i=0;i<N;i++){
      bool flag = true;
      for(int k=0;k<=20;k++){
        if(array[i][k]!=0){
          flag = false;
          break;
        }
      }
      if(flag) cnt++;
    }
    ans = power(2, cnt-1);
  }else{
    int cnt = 0;
    for(int i=0;i<N;i++){
      int sgn = 1;
      bool flagA = true;
      bool flag0 = true;
      for(int k=0;k<=20;k++){
        if(array[N-1][k]!=array[i][k]){
          flagA = false;
          break;
        }
      }
      for(int k=0;k<=20;k++){
        if(0!=array[i][k]){
          flag0 = false;
          break;
        }
      }
      if(sgn==1){
        if(flagA) cnt++;
        sgn*=-1;
      }else{
         if(flag0) cnt++;
         sgn*=-1;
      }
    }

    ans = power(2, (cnt+1)/2);
  }

  cout << ans <<endl;
  
  



  
  
  return 0;
}













Compiler output:
a.cc:11:1: error: expected ',' or ';' before 'll'
   11 | ll power(ll n, ll a){
      | ^~
a.cc: In function 'int main()':
a.cc:68:11: error: 'power' was not declared in this scope
   68 |     ans = power(2, cnt-1);
      |           ^~~~~
a.cc:96:11: error: 'power' was not declared in this scope
   96 |     ans = power(2, (cnt+1)/2);
      |           ^~~~~
Language: C++

#include <iostream>
#include <vector>
using namespace std;
using ll = long long;
const long long mod = 1e9 + 7;

long long mod_pow(long long x, long long k){
  long long ret = 1;
  while(k){
    if(k&1) ret *= x, ret %= mod;
    x *= x, x %= mod;
    k >>= 1;
  }
  return ret;
}

int main(){
  int N;
  cin >> N;
  vector<ll> A(N);
  for(int i = 0; i < N; ++i) cin >> A[i];
  for(int i = 1; i < N; ++i) A[i] ^= A[i-1];
  int M = 1<<10;
  vector<ll> dp(M,1);
  vector<ll> C(M,0), T(M,0);
  ll t = 0;
  for(int i = 0; i < N; ++i){
    int j = A[i];
    if(j){
      if(t != T[j]){
        (dp[j] *= C[j]+1) %= mod;
        C[j] = 0;
        T[j] = t;
      }
      ++C[j];
    }else{
      (dp[0] *= C[0]+1) %= mod;
      C[0] = 1;
      T[0] = t;
      ++t;
    }
  }
  for(int j = 0; j < M; ++j){
    if(t - T[j]){
      (dp[j] *= max(1,C[j])) %= mod;
      C[j] = 0;
    }
  }
  ll ans = 0;
  if(A.back()){
    (ans += (dp[A.back()]*C[A.back()]+mod-1)%mod) %= mod;
  }else{
    for(int i = 0; i < M; ++i){
      ans += dp[i] - 1;
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:20: error: no matching function for call to 'max(int, __gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type&)'
   45 |       (dp[j] *= max(1,C[j])) %= mod;
      |                 ~~~^~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:45:20: note:   deduced conflicting types for parameter 'const _Tp' ('int' and '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'})
   45 |       (dp[j] *= max(1,C[j])) %= mod;
      |                 ~~~^~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
Language: C++

#include <bits/stdc++.h>

#define MN 1001000
#define MOD 1000000007

using namespace std;
typedef long long ll;

ll n, ans, a[MN], txor, ac[MN], dp[MN], adp[MN];
vector<int> occ[MN];

ll zs(int l, int r) {
    int L = lower_bound(occ[0].begin(), occ[0].end(), l) - occ[0].begin();
    int R = lower_bound(occ[0].begin(), occ[0].end(), r) - occ[0].begin();
    return R - L;
}

ll p[MN][2];
ll solve(int pos, int empt) {
    if(pos == n) return !empt;

    ll &x = p[pos][empt];
    if(x != -1) return x;
    x = 0;

    ll xo = a[pos], j = pos;
    while(xo != 0) {
        xo ^= a[++j];
    }

    x = (solve(j + 1, 0) + solve(j + 1, 1)) % MOD;
    return x;
}

int main() {
    scanf("%lld", &n);
    memset(p, -1, sizeof p);

    occ[0].push_back(-1);
    for(int i = 0; i < n; i++) {
        scanf("%lld", &a[i]);
        txor ^= a[i];
        ac[i] = txor;
        occ[txor].push_back(i);
    }

    dp[n] = 1;
    for(int i = n-1; i >= 0; i--) {
        int ai = ((i == 0) ? 0 : ac[i-1]);
        int l = lower_bound(occ[ai].begin(), occ[ai].end(), i-1) - occ[ai].begin();
        int r = l + 1;

        assert(l < occ[ai].size() && occ[ai][l] == i - 1);

        if(r == occ[ai].size()) dp[i] = 1, adp[i] = 1;
        else {
            ll z = zs(i, occ[ai][r]);
            printf("%d %d %d | %lld %lld %lld\n", i, l, r, dp[occ[ai][r]], z, adp[r]);
            dp[i] = (dp[occ[ai][r]] + z * ((r + 1< occ[ai].size() ? adp[occ[ai][r+1]] : 0)) % MOD;
            adp[i] = (adp[occ[ai][r]] + dp[i]) % MOD;
        }
    }

    if(txor == 0) {
        for(int i = 0; i + 1 < n; i++) {
            if(ac[i]) ans += dp[i+1];
            if(ans >= MOD) ans -= MOD;
        }
        ans += solve(0, 0);
        if(ans >= MOD) ans -= MOD;
    }
    else ans = dp[0];

    for(int i = 0; i < n; i++) {
        printf("%lld ", dp[i]);
    } puts("");

    printf("%lld\n", ans);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:59:98: error: expected ')' before ';' token
   59 |             dp[i] = (dp[occ[ai][r]] + z * ((r + 1< occ[ai].size() ? adp[occ[ai][r+1]] : 0)) % MOD;
      |                     ~                                                                            ^
Language: C

#include<stdio.h>
#include<stdlib.h>
#define mod (1000000000 + 7)

int asc(const void *a, const void *b) {
  return *(int *)a - *(int *)b;
}

int A[500000],A2[500001];
int main(){
  int i,N;
  int num = 0,num2=0,ct=0,ctzero=0,ct2,memo = -1;
  long long int sum = 1,sum2=0,sumz;
  scanf("%d",&N);
  for(i = 0;i < N;i++){
    scanf("%d",&A[i]);
    num ^= A[i];
	if(num != 0){A2[ct] = num;ct++;}
	else{ctzero++;}
  }A2[ct]=1048576;ct++;
  for(i = 0;i < ctzero;i++){
    sum = (sum * 2)%mod;
  }
  sumz = sum;
	if(num == 0){
  		qsort(a, sizeof(a) / sizeof(int), sizeof(int), asc);
		for(i = 0;i < ct;i++){
		if(memo != A2[i]){
			for(j = 0;j < ct2;j++){
    			sum2 = (sum2 * 2)%mod;
            }sum += (sum2*sumz)%mod;
			ct2 = 1;sum2 = 1;
        }else{ct2++;}
	}
  printf("%lld\n",sum);
      return 0;
}

Compiler output:
main.c: In function 'main':
main.c:26:23: error: 'a' undeclared (first use in this function)
   26 |                 qsort(a, sizeof(a) / sizeof(int), sizeof(int), asc);
      |                       ^
main.c:26:23: note: each undeclared identifier is reported only once for each function it appears in
main.c:29:29: error: 'j' undeclared (first use in this function)
   29 |                         for(j = 0;j < ct2;j++){
      |                             ^
main.c:37:1: error: expected declaration or statement at end of input
   37 | }
      | ^
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;

ll MOD = 1000000007;
ll A[1048576];
ll C[1048576];
ll arr[1048576][2];
int zero_update[1048576];

ll power_mod(a,n){
	if(n == 0){
		return 1;
	}
	ll x = power_mod(a,n/2);
	x = x*x;
	x %= MOD;
	return (n%2 == 0 ? x : (a*x)%MOD);
}

int main(){
	int zero_cnt = 0;
	int U = 1048576;
	int N;
	cin >> N;
	for(i=0;i<N;i++){
		cin >> A[i];
		if(i == 0){
			C[i] = A[i];
		} else {
			C[i] = C[i-1] ^ A[i];
		}
	}
	for(i=0;i<U;i++){
		arr[i][0] = 1;
	}
	
	for(i=0;i<N;i++){
		int c = C[i];
		if(c == 0){
			zero_cnt++;
			continue;
		}
		int n = zero_cnt - zero_update[c];
		int a = arr[c][0];
		int b = arr[c][1];
		int x = a + n*b;
		int y = b;
		a = x;
		b = a+b;
		a %= MOD;
		b %= MOD;
		arr[c][0] = a;
		arr[c][1] = b;
	}
	ll answer = 0;
	int final = C[N-1];
	if(final != 0){
		answer = arr[final][0];
	} else {
		answer = 0;
		for(i=1;i<U;i++){
			answer += arr[i,1];
			answer %= MOD;
		}
		answer += power_mod(2,zero_cnt-1);
		answer %= MOD;
	}
	cout << answer << endl;
}


Compiler output:
a.cc:11:14: error: 'a' was not declared in this scope
   11 | ll power_mod(a,n){
      |              ^
a.cc:11:16: error: 'n' was not declared in this scope
   11 | ll power_mod(a,n){
      |                ^
a.cc:11:17: error: expression list treated as compound expression in initializer [-fpermissive]
   11 | ll power_mod(a,n){
      |                 ^
a.cc: In function 'int main()':
a.cc:26:13: error: 'i' was not declared in this scope
   26 |         for(i=0;i<N;i++){
      |             ^
a.cc:34:13: error: 'i' was not declared in this scope
   34 |         for(i=0;i<U;i++){
      |             ^
a.cc:38:13: error: 'i' was not declared in this scope
   38 |         for(i=0;i<N;i++){
      |             ^
a.cc:62:21: error: 'i' was not declared in this scope
   62 |                 for(i=1;i<U;i++){
      |                     ^
a.cc:66:36: error: 'power_mod' cannot be used as a function
   66 |                 answer += power_mod(2,zero_cnt-1);
      |                           ~~~~~~~~~^~~~~~~~~~~~~~
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;

ll MOD = 1000000007;
ll A[1048576];
ll C[1048576];
ll arr[1048576][2];
int zero_update[1048576];

ll power_mod(a,n){
	if(n == 0){
		return 1;
	}
	ll x = power_mod(a,n/2);
	x = x*x;
	x %= MOD;
	return (n%2 == 0 ? x : (a*x)%MOD);
}

int main(){
	int zero_cnt = 0;
	int U = 1048576;
	int N;
	cin >> N;
	for(i=0;i<N;i++){
		cin >> A[i];
		if(i == 0){
			C[i] = A[i];
		} else {
			C[i] = C[i-1] + A[i];
		}
	}
	for(i=0;i<U;i++){
		arr[i][0] = 1;
	}
	
	for(i=0;i<N;i++){
		int c = C[i];
		if(c == 0){
			zero_cnt++;
			continue;
		}
		int n = zero_cnt - zero_update[c];
		int a = arr[c][0];
		int b = arr[c][1];
		int x = a + n*b;
		int y = b;
		a = x;
		b = a+b;
		a %= MOD;
		b %= MOD;
		arr[c][0] = a;
		arr[c][1] = b;
	}
	ll answer = 0;
	int final = C[N-1];
	if(final != 0){
		answer = arr[final][0];
	} else {
		answer = 0;
		for(i=1;i<U;i++){
			answer += arr[i,1];
			answer %= MOD;
		}
		answer += power_mod(2,zero_cnt-1);
		answer %= MOD;
	}
	cout << answer << endl;
}


Compiler output:
a.cc:11:14: error: 'a' was not declared in this scope
   11 | ll power_mod(a,n){
      |              ^
a.cc:11:16: error: 'n' was not declared in this scope
   11 | ll power_mod(a,n){
      |                ^
a.cc:11:17: error: expression list treated as compound expression in initializer [-fpermissive]
   11 | ll power_mod(a,n){
      |                 ^
a.cc: In function 'int main()':
a.cc:26:13: error: 'i' was not declared in this scope
   26 |         for(i=0;i<N;i++){
      |             ^
a.cc:34:13: error: 'i' was not declared in this scope
   34 |         for(i=0;i<U;i++){
      |             ^
a.cc:38:13: error: 'i' was not declared in this scope
   38 |         for(i=0;i<N;i++){
      |             ^
a.cc:62:21: error: 'i' was not declared in this scope
   62 |                 for(i=1;i<U;i++){
      |                     ^
a.cc:66:36: error: 'power_mod' cannot be used as a function
   66 |                 answer += power_mod(2,zero_cnt-1);
      |                           ~~~~~~~~~^~~~~~~~~~~~~~
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;

ll MOD = 1000000007;
ll A[1048576];
ll C[1048576];
ll arr[1048576][2];
int zero_update[1048576];

ll power_mod(a,n){
	if(n == 0){
		return 1;
	}
	ll x = power_mod(a,n/2);
	x = x*x;
	x %= MOD;
	return (n%2 == 0 ? x : (a*x)%MOD);
}

int main(){
	int zero_cnt = 0;
	int U = 1048576;
	int N;
	cin >> N;
	for(i=0;i<N;i++){
		cin >> A[i];
		if(i == 0){
			C[i] = A[i];
		} else {
			C[i] = C[i-1] + A[i];
		}
	}
	for(i=0;i<U;i++){
		arr[i][0] = 1;
	}
	
	for(i=0;i<N;i++){
		int c = C[i];
		if(c == 0){
			zero_cnt++;
			continue;
		}
		int n = zero_cnt - zero_update[c];
		int a = arr[c][0];
		int b = arr[c][1];
		int x = a + n*b;
		int y = b;
		a = x;
		b = a+b;
		a %= MOD;
		b %= MOD;
		arr[c][0] = a;
		arr[c][1] = b;
	}
	ll answer = 0;
	int final = C[N-1];
	if(final != 0){
		answer = arr[final][0];
	} else {
		answer = 0;
		for(i=1;i<U;i++){
			answer += arr[i,1];
			answer %= MOD;
		}
		answer += power_mod(2,zero_cnt-1);
	}
	cout << answer << endl;
}


Compiler output:
a.cc:11:14: error: 'a' was not declared in this scope
   11 | ll power_mod(a,n){
      |              ^
a.cc:11:16: error: 'n' was not declared in this scope
   11 | ll power_mod(a,n){
      |                ^
a.cc:11:17: error: expression list treated as compound expression in initializer [-fpermissive]
   11 | ll power_mod(a,n){
      |                 ^
a.cc: In function 'int main()':
a.cc:26:13: error: 'i' was not declared in this scope
   26 |         for(i=0;i<N;i++){
      |             ^
a.cc:34:13: error: 'i' was not declared in this scope
   34 |         for(i=0;i<U;i++){
      |             ^
a.cc:38:13: error: 'i' was not declared in this scope
   38 |         for(i=0;i<N;i++){
      |             ^
a.cc:62:21: error: 'i' was not declared in this scope
   62 |                 for(i=1;i<U;i++){
      |                     ^
a.cc:66:36: error: 'power_mod' cannot be used as a function
   66 |                 answer += power_mod(2,zero_cnt-1);
      |                           ~~~~~~~~~^~~~~~~~~~~~~~