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Submission #625194

# Submission time Handle Problem Language Result Execution time Memory
625194 2022-08-09T15:04:25 Z iomoon191 Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 198 ms 2388 KB 
#include <bits/stdc++.h>
using ll = long long;
// #define int ll
using namespace std;

#define sz(x) (int)(x).size()
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, l, r) for(int i = l; i >= r; i--)
#define fi first
#define se second
#define mod 998244353

#define db(x) cerr << __LINE__ << " " << #x << " " << x << "\n"
using vi = vector<int>;
using pi = pair<int, int>;

const ll N = 505;
const ll inf = 1e9;

ll n, k;
vector<pi> state(N);
double dp[N][N];

void solve(){
	cin >> n >> k;
	state.resize(n);
	foru(i, 0, n - 1){
		cin >> state[i].fi >> state[i].se;
		if(state[i].se == -1){
			state[i].se = inf;
		}
	}
	sort(state.begin(), state.end(), [&](pi a, pi b){
		return a.se < b.se;
	});
	double res = inf;
	foru(i, 0, k){
		dp[0][0] = 0;
		foru(j, 1, k - i) dp[0][j] = inf;
		foru(j, 1, n){
			foru(f, 0, k - i){
				ll zz = j - f;
				auto kap = ((1 <= zz and zz <= i) ? 1.0 * state[j - 1].se / zz : 0);
				dp[j][f] = dp[j - 1][f] + kap; 
				if(f){
					dp[j][f] = min(dp[j][f], dp[j - 1][f - 1] + 1.0 * state[j - 1].fi / (i + 1));
				}
			}
		}
		res = min(res, dp[n][k - i]);
	}
	cout << fixed << setprecision(100) << res;
}

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	int t = 1; 
	while(t--){
		solve();
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 356 KB Output is correct
5 Correct 3 ms 2260 KB Output is correct
6 Correct 11 ms 2308 KB Output is correct
7 Correct 42 ms 2292 KB Output is correct
8 Correct 98 ms 2260 KB Output is correct
9 Correct 174 ms 2288 KB Output is correct
10 Correct 81 ms 2292 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 356 KB Output is correct
5 Correct 3 ms 2260 KB Output is correct
6 Correct 11 ms 2308 KB Output is correct
7 Correct 42 ms 2292 KB Output is correct
8 Correct 98 ms 2260 KB Output is correct
9 Correct 174 ms 2288 KB Output is correct
10 Correct 81 ms 2292 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 21 ms 2388 KB Output is correct
13 Correct 15 ms 2308 KB Output is correct
14 Correct 23 ms 2304 KB Output is correct
15 Correct 98 ms 2292 KB Output is correct
16 Correct 82 ms 2288 KB Output is correct
17 Correct 84 ms 2288 KB Output is correct
18 Correct 198 ms 2288 KB Output is correct
19 Correct 168 ms 2260 KB Output is correct
20 Correct 175 ms 2296 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 332 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 724 KB Output is correct
42 Correct 1 ms 724 KB Output is correct
43 Correct 1 ms 724 KB Output is correct
44 Correct 1 ms 720 KB Output is correct
45 Correct 1 ms 724 KB Output is correct
46 Correct 1 ms 712 KB Output is correct
47 Correct 1 ms 724 KB Output is correct
48 Correct 1 ms 716 KB Output is correct
49 Correct 2 ms 724 KB Output is correct
50 Correct 2 ms 716 KB Output is correct
51 Correct 2 ms 724 KB Output is correct
52 Correct 2 ms 724 KB Output is correct
53 Correct 2 ms 712 KB Output is correct
54 Correct 1 ms 724 KB Output is correct
55 Correct 1 ms 724 KB Output is correct
56 Correct 1 ms 716 KB Output is correct
57 Correct 1 ms 724 KB Output is correct
58 Correct 1 ms 724 KB Output is correct
59 Correct 1 ms 724 KB Output is correct
60 Correct 1 ms 724 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 163 ms 2292 KB Output is correct
2 Correct 170 ms 2292 KB Output is correct
3 Correct 161 ms 2288 KB Output is correct
4 Correct 170 ms 2260 KB Output is correct
5 Correct 160 ms 2292 KB Output is correct
6 Correct 166 ms 2296 KB Output is correct
7 Correct 165 ms 2288 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 356 KB Output is correct
5 Correct 3 ms 2260 KB Output is correct
6 Correct 11 ms 2308 KB Output is correct
7 Correct 42 ms 2292 KB Output is correct
8 Correct 98 ms 2260 KB Output is correct
9 Correct 174 ms 2288 KB Output is correct
10 Correct 81 ms 2292 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 21 ms 2388 KB Output is correct
13 Correct 15 ms 2308 KB Output is correct
14 Correct 23 ms 2304 KB Output is correct
15 Correct 98 ms 2292 KB Output is correct
16 Correct 82 ms 2288 KB Output is correct
17 Correct 84 ms 2288 KB Output is correct
18 Correct 198 ms 2288 KB Output is correct
19 Correct 168 ms 2260 KB Output is correct
20 Correct 175 ms 2296 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 328 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 328 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 724 KB Output is correct
62 Correct 1 ms 724 KB Output is correct
63 Correct 1 ms 724 KB Output is correct
64 Correct 1 ms 720 KB Output is correct
65 Correct 1 ms 724 KB Output is correct
66 Correct 1 ms 712 KB Output is correct
67 Correct 1 ms 724 KB Output is correct
68 Correct 1 ms 716 KB Output is correct
69 Correct 2 ms 724 KB Output is correct
70 Correct 2 ms 716 KB Output is correct
71 Correct 2 ms 724 KB Output is correct
72 Correct 2 ms 724 KB Output is correct
73 Correct 2 ms 712 KB Output is correct
74 Correct 1 ms 724 KB Output is correct
75 Correct 1 ms 724 KB Output is correct
76 Correct 1 ms 716 KB Output is correct
77 Correct 1 ms 724 KB Output is correct
78 Correct 1 ms 724 KB Output is correct
79 Correct 1 ms 724 KB Output is correct
80 Correct 1 ms 724 KB Output is correct
81 Correct 163 ms 2292 KB Output is correct
82 Correct 170 ms 2292 KB Output is correct
83 Correct 161 ms 2288 KB Output is correct
84 Correct 170 ms 2260 KB Output is correct
85 Correct 160 ms 2292 KB Output is correct
86 Correct 166 ms 2296 KB Output is correct
87 Correct 165 ms 2288 KB Output is correct
88 Correct 3 ms 2260 KB Output is correct
89 Correct 3 ms 2260 KB Output is correct
90 Correct 10 ms 2260 KB Output is correct
91 Correct 10 ms 2260 KB Output is correct
92 Correct 39 ms 2292 KB Output is correct
93 Correct 36 ms 2292 KB Output is correct
94 Correct 88 ms 2292 KB Output is correct
95 Correct 89 ms 2260 KB Output is correct
96 Correct 128 ms 2288 KB Output is correct
97 Correct 130 ms 2304 KB Output is correct
98 Correct 75 ms 2288 KB Output is correct
99 Correct 78 ms 2292 KB Output is correct
100 Correct 81 ms 2384 KB Output is correct
101 Correct 75 ms 2288 KB Output is correct
102 Correct 73 ms 2288 KB Output is correct
103 Correct 76 ms 2300 KB Output is correct
104 Correct 73 ms 2260 KB Output is correct
105 Correct 90 ms 2288 KB Output is correct