RE 0分球条

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define dep(i,a,b) for(int i=a;i>=b;i--)
#define exit(a)   return a;
#define endl   '\n'
using namespace std;
vector<int>v[100005]; 
int main(){
    int n,Q;
    cin>>n>>Q;
    while(Q--){
        int op;
        cin>>op;
        if(op==1){
            int i,j,k;
            cin>>i>>j>>k;
            v[i][j]=k;
        }
        else{
            int i,j;
            cin>>i>>j;
            cout<<v[i][j]<<endl;
        }
    }
    exit(0);
}

rt......