Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define all(x) (x).begin(),(x).end()
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,-1,0,1,1,-1,1,-1};
using Graph = vector<vector<int>>;
double nCk(int n, int k) {
double res=1.0;
for(int i=0; i<n; i++){
res*=0.5;}
for(int i=0; i<k; i++){
res*=(double)(n-i);
res/=(double)(k-i);
}
return res;}
struct edge{ll to, cost;};
typedef pair<ll,ll> P;
struct graph{
  ll V;
  vector<vector<edge> > G;
  vector<ll> d;

  graph(ll n){
    init(n);
  }

  void init(ll n){
    V = n;
    G.resize(V);
    d.resize(V);
    rep(i,V){
      d[i] = INF;
    }
  }

  void add_edge(ll s, ll t, ll cost){
    edge e;
    e.to = t, e.cost = cost;
    G[s].push_back(e);
  }

  void dijkstra(ll s){
    rep(i,V){
      d[i] = INF;
    }
    d[s] = 0;
    priority_queue<P,vector<P>, greater<P> > que;
    que.push(P(0,s));
    while(!que.empty()){
      P p = que.top(); que.pop();
      ll v = p.second;
      if(d[v]<p.first) continue;
      for(auto e : G[v]){
        if(d[e.to]>d[v]+e.cost){
          d[e.to] = d[v]+e.cost;
          que.push(P(d[e.to],e.to));
        }
      }
    }
  }
};
class UnionFind
{
public:
  int par[100005];
  int depth[100005];
  int nGroup[100005];
 
  UnionFind(int n) {
    init(n);
  }
 
  void init(int n) {
    for(int i=0; i<n; i++) {
      par[i] = i;
      depth[i] = 0;
      nGroup[i] = 1;
    }
  }
 
  int root(int x) {
    if(par[x] == x) {
      return x;
    } else {
      return par[x] = root(par[x]);
    }
  }
 
  bool same(int x, int y) {
    return root(x) == root(y);
  }
 
  void unite(int x, int y) {
    x = root(x);
    y = root(y);
    if(x == y) return;
 
    if(depth[x] < depth[y]) {
      par[x] = y;
      nGroup[y] += nGroup[x];
      nGroup[x] = 0;
    } else {
      par[y] = x;
      nGroup[x] += nGroup[y];
      nGroup[y] = 0;
      if(depth[x] == depth[y])
        depth[x]++;
    }
  }
};
const ll MAX = 510000;
ll fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
ll COM(ll n, ll k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}

int main(){
ll n; cin>>n;
ll a[n+1]={},b[n+1]={};
mint ca = 0,r = 0,l = 1000000;
rep(i,n+1){
cin>>a[i];
b[a[i]]++;
if(b[a[i]]==2)ca = a[i];}
rep(i,n+1){
if(a[i]==ca){
if(l==1000000) l = i;
else r = i;}
}
//cout << l <<" "<< r;
COMinit();
ca = 0;
mint com = 0, co = 0;
repl(i,1,n+2){
ca = 0;
com = COM(n+1,i);
co = COM(n+l-r,i-1);
//cout << com << " " << co << endl;
ca+=com-co;
ca%=MOD;
cout << ca << endl;
}}


Compiler output:
a.cc: In function 'int main()':
a.cc:151:1: error: 'mint' was not declared in this scope; did you mean 'uint'?
  151 | mint ca = 0,r = 0,l = 1000000;
      | ^~~~
      | uint
a.cc:155:15: error: 'ca' was not declared in this scope; did you mean 'a'?
  155 | if(b[a[i]]==2)ca = a[i];}
      |               ^~
      |               a
a.cc:157:10: error: 'ca' was not declared in this scope; did you mean 'a'?
  157 | if(a[i]==ca){
      |          ^~
      |          a
a.cc:158:4: error: 'l' was not declared in this scope
  158 | if(l==1000000) l = i;
      |    ^
a.cc:159:6: error: 'r' was not declared in this scope
  159 | else r = i;}
      |      ^
a.cc:163:1: error: 'ca' was not declared in this scope; did you mean 'a'?
  163 | ca = 0;
      | ^~
      | a
a.cc:164:5: error: expected ';' before 'com'
  164 | mint com = 0, co = 0;
      |     ^~~~
      |     ;
a.cc:167:1: error: 'com' was not declared in this scope; did you mean 'cos'?
  167 | com = COM(n+1,i);
      | ^~~
      | cos
a.cc:168:1: error: 'co' was not declared in this scope; did you mean 'cos'?
  168 | co = COM(n+l-r,i-1);
      | ^~
      | cos
a.cc:168:12: error: 'l' was not declared in this scope
  168 | co = COM(n+l-r,i-1);
      |            ^
a.cc:168:14: error: 'r' was not declared in this scope
  168 | co = COM(n+l-r,i-1);
      |              ^