提出 #31366475

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ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long //instead of int main, use signed main
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> tiii;
typedef tuple<int, int, int, int> tiiii;
//const int INF = 100000000;
const int INF = 4500000000000000000;
typedef pair<int, char> pic;
typedef vector<int> vi;
typedef vector<pii> vp;
typedef vector<vector<int>> vvi;
typedef vector<vector<pii>> vvp;
int dx[4] = { 0, 0, 1, -1 };
int dy[4] = { -1, 1, 0, 0 };
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int MOD = 1e9 + 7;
//const int MOD = 998244353;
//const int MOD = (1ll << 32);

signed main(){
    IOS;

    int n; cin >> n;
    vi a(n); for(int& i : a) cin >> i;
    vi cnt(2e5 + 10);
    for(int i : a) cnt[i]++;
    sort(a.begin(), a.end());
    a.erase(unique(a.begin(), a.end()), a.end());
    int ans = 0;
    for(int i = 0; i < a.size(); i++){
        for(int j = 0; j < a.size() && a[i] * a[j] <= 2e5; j++){
            ans += cnt[a[i] * a[j]] * cnt[a[i]] * cnt[a[j]];
        }
    }
    cout << ans;

}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:35:22: warning: comparison of integer expressions of different signedness: ‘long long int’ and ‘std::vector<long long int>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   35 |     for(int i = 0; i < a.size(); i++){
      |                    ~~^~~~~~~~~~
./Main.cpp:36:26: warning: comparison of integer expressions of different signedness: ‘long long int’ and ‘std::vector<long long int>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   36 |         for(int j = 0; j < a.size() && a[i] * a[j] <= 2e5; j++){
      |                        ~~^~~~~~~~~~

ジャッジ結果