提出 #65035948

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ソースコード 拡げる

#include <iostream>
#include "bits/stdc++.h"

using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;

typedef long double ld;
const ll dim=4*(1e5+7);
const ll mod=998244353;
const ll inf=1e17+77;
#define endl "\n"
#define fi first
#define pb push_back
#define se second
#define vll vector<ll>
ll n, p[dim], c, l, r, k, m;
vector<ll> a[dim];
ll sz[dim];
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ll q, x, y;
    cin>>n>>m;
    map<ll, ll> mp;
    n*=2;
    for(int i=1; i<=m; i++){
        cin>>x>>y;
        x=x+x-1;
        y=y+y-1;
        ll cur=(x+y)/2;
        if(cur>n/2)cur=(cur+n/2)%n;
        mp[cur]++;
    }
    ll ans=0;
    for(auto x: mp){
        ans+=(m-x.se)*x.se;
    }
    cout<<ans/2<<endl;


    return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:23:8: warning: unused variable ‘q’ [-Wunused-variable]
   23 |     ll q, x, y;
      |        ^

ジャッジ結果