Submission #803939

#	Time	Username	Problem	Language	Result	Execution time	Memory
803939		Dan4Life	Ideal city (IOI12_city)	C++17	0 / 100	5 ms	468 KiB

city

#include <bits/stdc++.h>
using namespace std;
using  ll = long long;
const ll MOD = (ll)1000000000;

int DistanceSum(int N, int *X, int *Y) {
    int ans = 0, tot = 0;
    sort(X,X+N), sort(Y,Y+N);
    for(int i = 0; i < N; i++){
        ans+=(1ll*X[i]*i-tot+MOD)%MOD;
        tot+=X[i], tot%=MOD;
    }
    tot = 0;
    for(int i = 0; i < N; i++){
        swap(X[i],Y[i]);
        ans+=(1ll*X[i]*i-tot+MOD)%MOD;
        tot+=X[i], tot%=MOD;
        swap(X[i],Y[i]);
    }
    return (int)ans;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 21
• Subtask 3: 0 / 23
• Subtask 4: 0 / 45