Submission #1030906

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030906		VMaksimoski008	Ideal city (IOI12_city)	C++17	32 / 100	63 ms	604 KiB

city

#include "bits/stdc++.h"
using namespace std;
using ll = long long;

int DistanceSum(int N, int *X, int *Y) {
    if(N <= 2000) {
        vector<int> graph[N];
        for(int i=0; i<N; i++) {
            for(int j=i+1; j<N; j++) {
                if(abs(X[i] - X[j]) + abs(Y[i] - Y[j]) == 1) {
                    graph[i].push_back(j);
                    graph[j].push_back(i);
                }
            }
        }

        int ans = 0;

        for(int i=0; i<N; i++) {
            queue<int> q;
            vector<bool> vis(N);
            vector<int> dist(N);
            vis[i] = 1; q.push(i);

            while(!q.empty()) {
                int u = q.front(); q.pop();
                for(int &v : graph[u]) {
                    if(vis[v]) continue;
                    vis[v] = 1;
                    dist[v] = dist[u] + 1;
                    q.push(v);
                }
            }

            for(int j=i+1; j<N; j++) ans += dist[j];
        }

        return ans; 
    }

    return N;
}

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