Submission #599363

#	Time	Username	Problem	Language	Result	Execution time	Memory
599363		gromperen	Aliens (IOI16_aliens)	C++14	12 / 100	117 ms	1300 KiB

aliens

#include <bits/stdc++.h>
#include "aliens.h"

const int INF = 1e9+7;

using namespace std;

long long take_photos(int n, int m, int k, vector<int> r, vector<int> c) {
	/*
	vector<vector<int>> vis(m+1, vector<int>(m+1));
	int ans = 0;
	for (int i = 0; i < n; ++i) {
		for (int x = r[i]; x <= c[i]; ++x) {
			for (int y = r[i]; y <= c[i]; ++y) {
				if (vis[x][y]) continue;
				ans++;
				vis[x][y] = 1;
			}
		}
	}
	*/

	vector<pair<int,int>> tmpcords;
	vector<pair<int,int>> cords;
	for (int i = 0; i < n; ++i) {
		tmpcords.push_back({r[i], c[i]});
	}
	sort(tmpcords.begin(), tmpcords.end());
	for (int i = 0; i < n; ++i) {
		if (i > 0 && tmpcords[i].first == cords[i-1].first && tmpcords[i].second == cords[i-1].second) continue;
		cords.push_back(tmpcords[i]);
	}
	
	vector<vector<int>> dp(n+1, vector<int>(k+1, INF));
	n = cords.size();
	dp[0][0] = 0;
	//for (int i = 0; i < cords.size(); ++i) {
		//dp[0][i] = 0;
	//}

	for (int i = 1; i <= cords.size(); ++i) {
		for (int j =1; j <= k; ++j) {

			for (int p = 0; p < i; ++p) {
				dp[i][j] = min(dp[i][j], 
						dp[p][j-1] + 
						(cords[i-1].first - cords[p].first + 1) * (cords[i-1].second - cords[p].first + 1));
			}

		}
	}

	int ans = 1e9+7;
	for (int i = 0; i <= k; ++i) {
		ans = min(ans, dp[cords.size()][i]);
	}


    return ans;
}

Compilation message (stderr)

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |  for (int i = 1; i <= cords.size(); ++i) {
      |                  ~~^~~~~~~~~~~~~~~

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