oj.uz

답안 #761766

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
761766 2023-06-20T09:02:35 Z Dan4Life Aliens (IOI16_aliens) C++17
0 / 100
 1 ms 212 KB 
#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
using ll = long long;
using ar = array<int,2>;
vector<ar> v,w;
 
int diag(int i){ return v[i][0]-v[i][1]; }
ll sq(int i, int j){
	ll x = v[i][0]-v[j][1]; if(diag(i) < diag(j)-1) x=0;
	return 1ll*(v[j][0]-v[i][1]+1)*(v[j][0]-v[i][1]+1)-x*(x+1)/2;
}
 
ll take_photos(int n, int m, int k, vector<int> r, vector<int> c) {
	for(int i = 0; i < n; i++)
		if(r[i]>c[i]) r[i]=m-r[i]-1,c[i]=m-c[i]-1;
	for(int i = 0; i < n; i++) w.pb({c[i],r[i]});
	sort(begin(w),end(w),[&](ar a, ar b){
		if(a[0]!=b[0]) return a[0]<b[0];
		return a[1]>b[1];
	}); 
	int mn=m;
	for(int i = n-1; i >=0; i--){
		if(mn>w[i][1]) v.pb(w[i]);
		mn = min(mn,w[i][1]);
	}
	n = sz(v); ll dp[k+1][n+1], ans = (ll)4e18;
	memset(dp,63,sizeof(dp)); sort(begin(v),end(v));
	for(int i = 1; i <= n; i++) dp[1][i] = sq(0,i-1);
	for(int j = 2; j <= k; j++)
		for(int i = 1; i <= n; i++)
			for(int x = 1; x < i; x++)
				dp[j][i] = min(dp[j][i], dp[j-1][x]+sq(x,i-1));
	for(int i = 1; i <= k; i++) ans = min(ans, dp[i][n]);
	return ans;
}

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Wrong answer: output = 3, expected = 4
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Correct answer: answer = 1
2 Correct 0 ms 212 KB Correct answer: answer = 4
3 Correct 1 ms 212 KB Correct answer: answer = 1
4 Correct 0 ms 212 KB Correct answer: answer = 5
5 Incorrect 0 ms 212 KB Wrong answer: output = 34, expected = 41
6 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Wrong answer: output = 3, expected = 4
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Wrong answer: output = 3, expected = 4
2 Halted 0 ms 0 KB -

Subtask #5
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Wrong answer: output = 3, expected = 4
2 Halted 0 ms 0 KB -

Subtask #6
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Wrong answer: output = 3, expected = 4
2 Halted 0 ms 0 KB -