Submission #619792

#	Time	Username	Problem	Language	Result	Execution time	Memory
619792		A_D	Aliens (IOI16_aliens)	C++14	12 / 100	137 ms	2304 KiB

aliens

#include "aliens.h"

#include <bits/stdc++.h>

using namespace std;

const int N=5e2+11;

long long dp[N][N];
pair<long long,long long> a[N];

long long take_photos(int n, int m, int k, vector<int> r, vector<int> c) {

    for(int j=1;j<=n;j++){
        dp[0][j]=1e18;
        dp[j][0]=1e18;
    }

    for(int i=0;i<n;i++){
        if(r[i]>c[i])swap(r[i],c[i]);
        a[i+1]={r[i],c[i]};
    }
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++){
        for(int j=1;j<=k;j++){
            long long ret=1e18;
            long long mn=a[i].first;
            long long mx=a[i].second;
            for(int h=i;h>=1;h--){
                mn=min(mn,a[h].first);
                mx=max(mx,a[h].second);
                if(dp[h-1][j-1]==1e18)continue;
                long long u=(mx-mn+1)*(mx-mn+1)+dp[h-1][j-1];
                ret=min(ret,u);
            }
            dp[i][j]=ret;

        }
    }
//    cout<<dp[0][0]<<" "<<dp[1][1]<<"\n";
    long long ret=1e18;
    for(int i=1;i<=k;i++){
        ret=min(ret,dp[n][i]);
    }
    return ret;

}

• Subtask 1: 0 / 4
• Subtask 2: 12 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40