Submission #301297

#	Time	Username	Problem	Language	Result	Execution time	Memory
301297		williamMBDK	Aliens (IOI16_aliens)	C++17	12 / 100	138 ms	2304 KiB

aliens

#include<bits/stdc++.h>
#include "aliens.h"
using namespace std;
int N, M, K;
vector<int> R, C;
vector<vector<long long>> dp;
long long rec(int idx, int k){
	if(idx == N) return 0;
	if(k == K-1) return (R[N-1] - R[idx] + 1)*(R[N-1] - R[idx] + 1);
	if(dp[idx][k] != -1) return dp[idx][k];
	long long res = LLONG_MAX;
	for(int i = idx; i < N; i++){
		long long c = (R[i] - R[idx] + 1) * (R[i] - R[idx] + 1);
		c += rec(i+1, k+1);
		res = min(c, res);
	}
	dp[idx][k] = res;
	return res;
}
long long take_photos(int _N, int _M, int _K, std::vector<int> _R, std::vector<int> _C) {
	N = _N;
	M = _M;
	K = _K;
	R = _R;
	C = _C;
	sort(R.begin(), R.end());
	dp = vector<vector<long long>> (N, vector<long long> (K,-1));
	return rec(0, 0);
}

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