Submission #315191

#	Time	Username	Problem	Language	Result	Execution time	Memory
315191		juggernaut	Ideal city (IOI12_city)	C++14	32 / 100	175 ms	17280 KiB

city

#include<bits/stdc++.h>
//#include"grader.cpp"
using namespace std;
typedef long long ll;
vector<int>g[2005];
int d[2005][2005],res;
int DistanceSum(int n,int *X,int *Y){
    int i,j;
    for(i=0;i+1<n;i++)
    for(j=i+1;j<n;j++){d[i][j]=2e9,d[j][i]=2e9;if(abs(X[i]-X[j])+abs(Y[i]-Y[j])==1){
        g[i].push_back(j);
        g[j].push_back(i);
    }}
    for(i=0;i<n;i++){
        queue<int>q;
        q.push(i);
        while(!q.empty()){
            int v=q.front();
            q.pop();
            for(int to:g[v])if(d[i][to]>d[i][v]+1){
                d[i][to]=d[i][v]+1;
                q.push(to);
            }
        }
    }
    for(i=0;i+1<n;i++)
        for(j=i+1;j<n;j++)res=(res+d[i][j])%(1000000000);
    return res;
}
/*
11
2 5
2 6
3 3
3 6
4 3
4 4
4 5
4 6
5 3
5 4
5 6
*/

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