提出 #22817863

---

ソースコード 拡げる

#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
using namespace std;
typedef long long ll;
const double PI = acos(-1.0);
const ll modn = 1000000007;

int main()
{ 
    int n;
    cin >> n;

    vector<int> ca(n + 1, 0), cc(n + 1, 0);
    vector<vector<int> > pb(n + 1);
    vector<int> a(n), b(n), c(n);

    for (int i = 0; i < n; i++) {
        cin >> a[i];
        ca[a[i]]++;
    }
    for (int i = 0; i < n; i++) {
        cin >> b[i];
        pb[b[i]].push_back(i + 1);
    }
    for (int i = 0; i < n; i++) {
        cin >> c[i];
        cc[c[i]]++;
    }

    ll res = 0, subres = 0;
    for (int i = 1; i <= n; i++) {
        subres = 0;
        for (int j = 0; j < pb[i].size(); j++) {
            subres += cc[pb[i][j]];
        }
        res += ca[i] * subres;
    }

    cout << res << endl;

    return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:54:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vector<int>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   54 |         for (int j = 0; j < pb[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~

ジャッジ結果