oj.uz

답안 #624516

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
624516 2022-08-08T11:32:29 Z QwertyPi Let's Win the Election (JOI22_ho_t3) C++14
56 / 100
 1888 ms 18900 KB 
#include <bits/stdc++.h>
#define int long long
#define inf (1 << 30)
#define ld long double
using namespace std;
 
const int N = 113;
int a[N], b[N], s[N];
int id_x[N], id_y[N];
int vid_x[N], vid_y[N]; 
 
struct Pair{
	int a, b, id;
	Pair() = default;
	Pair(int _a, int _b, int _i) : a(_a), b(_b), id(_i){}; 
};
 
vector<Pair> vp;
long double dp[N][N][N];
int cnt[N][N];
 
int32_t main(){
	int n, K;
	cin >> n >> K;
	for(int i = 0; i < n; i++){
		cin >> a[i] >> b[i];
		b[i] = (b[i] == -1) ? inf : b[i];
		vp.push_back({a[i], b[i], i});
	}
 
	sort(vp.begin(), vp.end(), [](Pair x, Pair y){
		return x.a < y.a || x.a == y.a && x.b < y.b;
	});
	
	for(int i = 0; i < n; i++){
		id_x[i] = vp[i].id;
		vid_x[vp[i].id] = i;
	}
 
	sort(vp.begin(), vp.end(), [](Pair x, Pair y){
		return x.b < y.b || x.b == y.b && x.a < y.a;
	});
	
	for(int i = 0; i < n; i++){
		id_y[i] = vp[i].id;
		vid_y[vp[i].id] = i;
	}
	
	/*
	for(int i = 0; i < n; i++){
		cout << vid_x[i] << ' ' << vid_y[i] << ' ' << id_x[i] << ' ' << id_y[i] << endl;
	}
	*/
	
	for(int i = 0; i < n; i++){
		cnt[vid_x[i] + 1][vid_y[i] + 1] = 1;
	}
	
	/*
	for(int i = 0; i <= n; i++){
		for(int j = 0; j <= n; j++){
			cout << cnt[i][j] << ' ';
		}
		cout << endl;
	}
	cout << endl;
	*/
	
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			cnt[i][j] = cnt[i - 1][j] + cnt[i][j - 1] + cnt[i][j] - cnt[i - 1][j - 1];
		}
	}
	
	/*
	for(int i = 0; i <= n; i++){
		for(int j = 0; j <= n; j++){
			cout << cnt[i][j] << ' ';
		}
		cout << endl;
	}
	cout << endl;
	
	for(int i = 0; i < n; i++){
		cout << a[id_x[i]] << ' ';
	}
	cout << endl;
	for(int i = 0; i < n; i++){
		cout << b[id_y[i]] << ' ';
	}
	cout << endl;
	*/
	
	long double ans = inf;
	
	for(int l = 0; l <= n; l++){
		for(int i = 0; i <= n; i++){
			for(int j = 0; j <= n; j++){
				for(int k = 0; k <= n; k++){
					dp[i][j][k] = inf;
				}
			}
		}
		dp[0][0][0] = 0; 
		for(int i = 0; i <= n; i++){
			for(int j = 0; j <= n; j++){
				for(int k = 0; k <= n; k++){
					if(i > 0){
						if(vid_y[id_x[i - 1]] < j){
							dp[i][j][k] = min(dp[i][j][k], dp[i - 1][j][k]);
						}else{
							dp[i][j][k] = min(dp[i][j][k], dp[i - 1][j][k] + (ld) a[id_x[i - 1]] / (l + 1));
						}
					}
					if(j > 0){
						if(vid_x[id_y[j - 1]] < i){
							dp[i][j][k] = min(dp[i][j][k], dp[i][j - 1][k]);
						}else{
							if(k > 0 && b[id_y[j - 1]] != inf){
								dp[i][j][k] = min(dp[i][j][k], dp[i][j - 1][k - 1] + (ld) b[id_y[j - 1]] / k);
							}
						}
					}
				}
				if(i + j - cnt[i][j] == K){
					ans = min(ans, dp[i][j][l]);
				}
			}
		}
	}
	
	/*
	for(int k = 0; k <= n; k++){
		for(int i = 0; i <= n; i++){
			for(int j = 0; j <= n; j++){
				cout << dp[i][j][k] << ' ';
			}
			cout << endl;
		}
		cout << endl;
	}
	*/
	
	cout << fixed << setprecision(15) << ans << endl;
}

Compilation message

Main.cpp: In lambda function:
Main.cpp:32:34: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   32 |   return x.a < y.a || x.a == y.a && x.b < y.b;
      |                       ~~~~~~~~~~~^~~~~~~~~~~~
Main.cpp: In lambda function:
Main.cpp:41:34: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   41 |   return x.b < y.b || x.b == y.b && x.a < y.a;
      |                       ~~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Runtime error 2 ms 468 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Runtime error 2 ms 468 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 440 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 444 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 440 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 5 ms 1108 KB Output is correct
17 Correct 5 ms 1108 KB Output is correct
18 Correct 4 ms 1108 KB Output is correct
19 Correct 4 ms 1108 KB Output is correct
20 Correct 5 ms 1108 KB Output is correct
21 Correct 4 ms 1080 KB Output is correct
22 Correct 4 ms 1108 KB Output is correct
23 Correct 4 ms 1108 KB Output is correct
24 Correct 5 ms 1136 KB Output is correct
25 Correct 4 ms 1084 KB Output is correct
26 Correct 5 ms 1172 KB Output is correct
27 Correct 4 ms 1172 KB Output is correct
28 Correct 4 ms 1172 KB Output is correct
29 Correct 4 ms 1108 KB Output is correct
30 Correct 5 ms 1108 KB Output is correct
31 Correct 5 ms 1108 KB Output is correct
32 Correct 5 ms 1108 KB Output is correct
33 Correct 5 ms 1108 KB Output is correct
34 Correct 5 ms 1108 KB Output is correct
35 Correct 4 ms 1108 KB Output is correct
36 Correct 4 ms 1108 KB Output is correct
37 Correct 4 ms 1176 KB Output is correct
38 Correct 5 ms 1136 KB Output is correct
39 Correct 4 ms 1108 KB Output is correct
40 Correct 4 ms 1108 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 440 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 5 ms 1108 KB Output is correct
17 Correct 5 ms 1108 KB Output is correct
18 Correct 4 ms 1108 KB Output is correct
19 Correct 4 ms 1108 KB Output is correct
20 Correct 5 ms 1108 KB Output is correct
21 Correct 4 ms 1080 KB Output is correct
22 Correct 4 ms 1108 KB Output is correct
23 Correct 4 ms 1108 KB Output is correct
24 Correct 5 ms 1136 KB Output is correct
25 Correct 4 ms 1084 KB Output is correct
26 Correct 5 ms 1172 KB Output is correct
27 Correct 4 ms 1172 KB Output is correct
28 Correct 4 ms 1172 KB Output is correct
29 Correct 4 ms 1108 KB Output is correct
30 Correct 5 ms 1108 KB Output is correct
31 Correct 5 ms 1108 KB Output is correct
32 Correct 5 ms 1108 KB Output is correct
33 Correct 5 ms 1108 KB Output is correct
34 Correct 5 ms 1108 KB Output is correct
35 Correct 4 ms 1108 KB Output is correct
36 Correct 4 ms 1108 KB Output is correct
37 Correct 4 ms 1176 KB Output is correct
38 Correct 5 ms 1136 KB Output is correct
39 Correct 4 ms 1108 KB Output is correct
40 Correct 4 ms 1108 KB Output is correct
41 Correct 1833 ms 18820 KB Output is correct
42 Correct 1779 ms 18820 KB Output is correct
43 Correct 1863 ms 18816 KB Output is correct
44 Correct 1846 ms 18816 KB Output is correct
45 Correct 1849 ms 18816 KB Output is correct
46 Correct 1792 ms 18812 KB Output is correct
47 Correct 1848 ms 18892 KB Output is correct
48 Correct 1723 ms 18828 KB Output is correct
49 Correct 1806 ms 18812 KB Output is correct
50 Correct 1745 ms 18812 KB Output is correct
51 Correct 1791 ms 18820 KB Output is correct
52 Correct 1773 ms 18812 KB Output is correct
53 Correct 1833 ms 18820 KB Output is correct
54 Correct 1812 ms 18816 KB Output is correct
55 Correct 1830 ms 18812 KB Output is correct
56 Correct 1814 ms 18816 KB Output is correct
57 Correct 1803 ms 18816 KB Output is correct
58 Correct 1784 ms 18816 KB Output is correct
59 Correct 1888 ms 18900 KB Output is correct
60 Correct 1809 ms 18812 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Runtime error 2 ms 468 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -