Submission #28551338

---

Source Code Expand

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

int main(){
    int N, Q;
    cin >> N >> Q;

    map<long long, vector<int>> mp;

    int a;
    for (int i=0; i<N; i++) {
        cin >> a;
        mp[a].push_back(i+1);
    };

    long long x;
    int k;
    for (int i=0; i<Q; i++){
        cin >> x >> k;
        if (mp.count(x) == 0) {
            cout << -1 << endl;
        } else {
            if (k-1 >= mp[x].size()) {
                cout << -1 << endl;
            } else {
                cout << mp[x][k-1] << endl;
            };
        }
    };
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:23:21: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<int>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   23 |             if (k-1 >= mp[x].size()) {
      |                 ~~~~^~~~~~~~~~~~~~~

Judge Result