oj.uz

답안 #625293

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
625293 2022-08-09T22:58:53 Z dooompy Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 2225 ms 4608 KB 
#include "bits/stdc++.h"

using namespace std;

void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    while (l != r) cout << *l << " \n"[++l == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.first >> a.second;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.first << ", " << a.second << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}

#ifdef local
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif

using ll = long long;

vector<pair<int, int>> v;

int goal, n, k;

long double dp[505][505];

long double solve(int node, int ctcollab) {
    if (dp[node][ctcollab] != -1) return dp[node][ctcollab];

    if (node == n + 1) return 1e9;

    int ctnorm = node - ctcollab;

    if (ctcollab == goal) {
        vector<pair<int, int>> cur;
        for (int i = node; i < n; i++) {
            cur.emplace_back(v[i]);
        }

        sort(cur.begin(), cur.end());
        long double ct = 0;

        for (int i = 0; i < k - node; i++) {
            ct += ((long double) cur[i].first) / (ctcollab + 1);
        }

        return dp[node][ctcollab] = ct;
    }

    long double ans = solve(node + 1, ctcollab + 1) + ((long double) v[node].second) / (ctcollab + 1);

    if (ctnorm + ctcollab < k) {
        ans = min(ans, solve(node + 1, ctcollab) + ((long double) v[node].first) / (goal + 1));
    }
//    cout << ans << endl;
    return dp[node][ctcollab] = ans;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    cin >> n >> k;

    for (int i = 0; i < n; i++) {
        int a, b; cin >> a >> b;
        if (b == -1) b = 1e9;
        v.emplace_back(a, b);
    }

    sort(v.begin(), v.end(), [](pair<int, int> a, pair<int, int> b) {
        return a.second < b.second;
    });

    long double ans = 1e18;

    for (int i = 0; i < k; i++) {
        if (i >= 1 && v[i-1].second == 1e9) break;
        goal = i;
        fill(&dp[0][0], &dp[0][0] + sizeof(dp) / sizeof(dp[0][0]), -1);
        long double res = solve(0, 0);

        ans = min(ans, res);
    }

    cout << fixed << setprecision(10) << ans;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 2 ms 4308 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 2 ms 4308 KB Output is correct
8 Correct 2 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 3 ms 4308 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 2 ms 4308 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 2 ms 4308 KB Output is correct
8 Correct 2 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 3 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 256 ms 4464 KB Output is correct
13 Correct 395 ms 4344 KB Output is correct
14 Correct 306 ms 4428 KB Output is correct
15 Correct 996 ms 4480 KB Output is correct
16 Correct 1278 ms 4356 KB Output is correct
17 Correct 507 ms 4364 KB Output is correct
18 Correct 1493 ms 4368 KB Output is correct
19 Correct 1370 ms 4364 KB Output is correct
20 Correct 500 ms 4428 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 4 ms 4308 KB Output is correct
3 Correct 3 ms 4308 KB Output is correct
4 Correct 4 ms 4308 KB Output is correct
5 Correct 5 ms 4308 KB Output is correct
6 Correct 5 ms 4308 KB Output is correct
7 Correct 6 ms 4308 KB Output is correct
8 Correct 4 ms 4308 KB Output is correct
9 Correct 5 ms 4180 KB Output is correct
10 Correct 4 ms 4308 KB Output is correct
11 Correct 4 ms 4308 KB Output is correct
12 Correct 4 ms 4308 KB Output is correct
13 Correct 4 ms 4308 KB Output is correct
14 Correct 4 ms 4180 KB Output is correct
15 Correct 5 ms 4308 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 4 ms 4308 KB Output is correct
3 Correct 3 ms 4308 KB Output is correct
4 Correct 4 ms 4308 KB Output is correct
5 Correct 5 ms 4308 KB Output is correct
6 Correct 5 ms 4308 KB Output is correct
7 Correct 6 ms 4308 KB Output is correct
8 Correct 4 ms 4308 KB Output is correct
9 Correct 5 ms 4180 KB Output is correct
10 Correct 4 ms 4308 KB Output is correct
11 Correct 4 ms 4308 KB Output is correct
12 Correct 4 ms 4308 KB Output is correct
13 Correct 4 ms 4308 KB Output is correct
14 Correct 4 ms 4180 KB Output is correct
15 Correct 5 ms 4308 KB Output is correct
16 Correct 4 ms 4296 KB Output is correct
17 Correct 6 ms 4248 KB Output is correct
18 Correct 6 ms 4308 KB Output is correct
19 Correct 13 ms 4308 KB Output is correct
20 Correct 9 ms 4316 KB Output is correct
21 Correct 9 ms 4312 KB Output is correct
22 Correct 15 ms 4296 KB Output is correct
23 Correct 9 ms 4312 KB Output is correct
24 Correct 8 ms 4316 KB Output is correct
25 Correct 16 ms 4312 KB Output is correct
26 Correct 10 ms 4308 KB Output is correct
27 Correct 8 ms 4308 KB Output is correct
28 Correct 8 ms 4308 KB Output is correct
29 Correct 8 ms 4296 KB Output is correct
30 Correct 8 ms 4300 KB Output is correct
31 Correct 8 ms 4316 KB Output is correct
32 Correct 9 ms 4308 KB Output is correct
33 Correct 8 ms 4308 KB Output is correct
34 Correct 7 ms 4316 KB Output is correct
35 Correct 10 ms 4316 KB Output is correct
36 Correct 8 ms 4308 KB Output is correct
37 Correct 8 ms 4308 KB Output is correct
38 Correct 7 ms 4308 KB Output is correct
39 Correct 8 ms 4312 KB Output is correct
40 Correct 7 ms 4308 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 4 ms 4308 KB Output is correct
3 Correct 3 ms 4308 KB Output is correct
4 Correct 4 ms 4308 KB Output is correct
5 Correct 5 ms 4308 KB Output is correct
6 Correct 5 ms 4308 KB Output is correct
7 Correct 6 ms 4308 KB Output is correct
8 Correct 4 ms 4308 KB Output is correct
9 Correct 5 ms 4180 KB Output is correct
10 Correct 4 ms 4308 KB Output is correct
11 Correct 4 ms 4308 KB Output is correct
12 Correct 4 ms 4308 KB Output is correct
13 Correct 4 ms 4308 KB Output is correct
14 Correct 4 ms 4180 KB Output is correct
15 Correct 5 ms 4308 KB Output is correct
16 Correct 4 ms 4296 KB Output is correct
17 Correct 6 ms 4248 KB Output is correct
18 Correct 6 ms 4308 KB Output is correct
19 Correct 13 ms 4308 KB Output is correct
20 Correct 9 ms 4316 KB Output is correct
21 Correct 9 ms 4312 KB Output is correct
22 Correct 15 ms 4296 KB Output is correct
23 Correct 9 ms 4312 KB Output is correct
24 Correct 8 ms 4316 KB Output is correct
25 Correct 16 ms 4312 KB Output is correct
26 Correct 10 ms 4308 KB Output is correct
27 Correct 8 ms 4308 KB Output is correct
28 Correct 8 ms 4308 KB Output is correct
29 Correct 8 ms 4296 KB Output is correct
30 Correct 8 ms 4300 KB Output is correct
31 Correct 8 ms 4316 KB Output is correct
32 Correct 9 ms 4308 KB Output is correct
33 Correct 8 ms 4308 KB Output is correct
34 Correct 7 ms 4316 KB Output is correct
35 Correct 10 ms 4316 KB Output is correct
36 Correct 8 ms 4308 KB Output is correct
37 Correct 8 ms 4308 KB Output is correct
38 Correct 7 ms 4308 KB Output is correct
39 Correct 8 ms 4312 KB Output is correct
40 Correct 7 ms 4308 KB Output is correct
41 Correct 11 ms 4308 KB Output is correct
42 Correct 9 ms 4308 KB Output is correct
43 Correct 17 ms 4312 KB Output is correct
44 Correct 18 ms 4308 KB Output is correct
45 Correct 28 ms 4276 KB Output is correct
46 Correct 30 ms 4316 KB Output is correct
47 Correct 36 ms 4316 KB Output is correct
48 Correct 38 ms 4324 KB Output is correct
49 Correct 59 ms 4296 KB Output is correct
50 Correct 62 ms 4308 KB Output is correct
51 Correct 64 ms 4312 KB Output is correct
52 Correct 48 ms 4320 KB Output is correct
53 Correct 37 ms 4308 KB Output is correct
54 Correct 42 ms 4308 KB Output is correct
55 Correct 37 ms 4316 KB Output is correct
56 Correct 39 ms 4324 KB Output is correct
57 Correct 46 ms 4308 KB Output is correct
58 Correct 46 ms 4308 KB Output is correct
59 Correct 34 ms 4308 KB Output is correct
60 Correct 35 ms 4304 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2160 ms 4372 KB Output is correct
2 Correct 2005 ms 4372 KB Output is correct
3 Correct 2143 ms 4372 KB Output is correct
4 Correct 2217 ms 4368 KB Output is correct
5 Correct 2118 ms 4372 KB Output is correct
6 Correct 2225 ms 4376 KB Output is correct
7 Correct 1964 ms 4372 KB Output is correct

Subtask #7
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4308 KB Output is correct
2 Correct 2 ms 4308 KB Output is correct
3 Correct 2 ms 4308 KB Output is correct
4 Correct 2 ms 4308 KB Output is correct
5 Correct 2 ms 4308 KB Output is correct
6 Correct 2 ms 4308 KB Output is correct
7 Correct 2 ms 4308 KB Output is correct
8 Correct 2 ms 4308 KB Output is correct
9 Correct 2 ms 4308 KB Output is correct
10 Correct 3 ms 4308 KB Output is correct
11 Correct 2 ms 4308 KB Output is correct
12 Correct 256 ms 4464 KB Output is correct
13 Correct 395 ms 4344 KB Output is correct
14 Correct 306 ms 4428 KB Output is correct
15 Correct 996 ms 4480 KB Output is correct
16 Correct 1278 ms 4356 KB Output is correct
17 Correct 507 ms 4364 KB Output is correct
18 Correct 1493 ms 4368 KB Output is correct
19 Correct 1370 ms 4364 KB Output is correct
20 Correct 500 ms 4428 KB Output is correct
21 Correct 2 ms 4308 KB Output is correct
22 Correct 4 ms 4308 KB Output is correct
23 Correct 3 ms 4308 KB Output is correct
24 Correct 4 ms 4308 KB Output is correct
25 Correct 5 ms 4308 KB Output is correct
26 Correct 5 ms 4308 KB Output is correct
27 Correct 6 ms 4308 KB Output is correct
28 Correct 4 ms 4308 KB Output is correct
29 Correct 5 ms 4180 KB Output is correct
30 Correct 4 ms 4308 KB Output is correct
31 Correct 4 ms 4308 KB Output is correct
32 Correct 4 ms 4308 KB Output is correct
33 Correct 4 ms 4308 KB Output is correct
34 Correct 4 ms 4180 KB Output is correct
35 Correct 5 ms 4308 KB Output is correct
36 Correct 4 ms 4296 KB Output is correct
37 Correct 6 ms 4248 KB Output is correct
38 Correct 6 ms 4308 KB Output is correct
39 Correct 13 ms 4308 KB Output is correct
40 Correct 9 ms 4316 KB Output is correct
41 Correct 9 ms 4312 KB Output is correct
42 Correct 15 ms 4296 KB Output is correct
43 Correct 9 ms 4312 KB Output is correct
44 Correct 8 ms 4316 KB Output is correct
45 Correct 16 ms 4312 KB Output is correct
46 Correct 10 ms 4308 KB Output is correct
47 Correct 8 ms 4308 KB Output is correct
48 Correct 8 ms 4308 KB Output is correct
49 Correct 8 ms 4296 KB Output is correct
50 Correct 8 ms 4300 KB Output is correct
51 Correct 8 ms 4316 KB Output is correct
52 Correct 9 ms 4308 KB Output is correct
53 Correct 8 ms 4308 KB Output is correct
54 Correct 7 ms 4316 KB Output is correct
55 Correct 10 ms 4316 KB Output is correct
56 Correct 8 ms 4308 KB Output is correct
57 Correct 8 ms 4308 KB Output is correct
58 Correct 7 ms 4308 KB Output is correct
59 Correct 8 ms 4312 KB Output is correct
60 Correct 7 ms 4308 KB Output is correct
61 Correct 11 ms 4308 KB Output is correct
62 Correct 9 ms 4308 KB Output is correct
63 Correct 17 ms 4312 KB Output is correct
64 Correct 18 ms 4308 KB Output is correct
65 Correct 28 ms 4276 KB Output is correct
66 Correct 30 ms 4316 KB Output is correct
67 Correct 36 ms 4316 KB Output is correct
68 Correct 38 ms 4324 KB Output is correct
69 Correct 59 ms 4296 KB Output is correct
70 Correct 62 ms 4308 KB Output is correct
71 Correct 64 ms 4312 KB Output is correct
72 Correct 48 ms 4320 KB Output is correct
73 Correct 37 ms 4308 KB Output is correct
74 Correct 42 ms 4308 KB Output is correct
75 Correct 37 ms 4316 KB Output is correct
76 Correct 39 ms 4324 KB Output is correct
77 Correct 46 ms 4308 KB Output is correct
78 Correct 46 ms 4308 KB Output is correct
79 Correct 34 ms 4308 KB Output is correct
80 Correct 35 ms 4304 KB Output is correct
81 Correct 2160 ms 4372 KB Output is correct
82 Correct 2005 ms 4372 KB Output is correct
83 Correct 2143 ms 4372 KB Output is correct
84 Correct 2217 ms 4368 KB Output is correct
85 Correct 2118 ms 4372 KB Output is correct
86 Correct 2225 ms 4376 KB Output is correct
87 Correct 1964 ms 4372 KB Output is correct
88 Correct 92 ms 4316 KB Output is correct
89 Correct 80 ms 4328 KB Output is correct
90 Correct 345 ms 4332 KB Output is correct
91 Correct 360 ms 4456 KB Output is correct
92 Correct 991 ms 4368 KB Output is correct
93 Correct 1037 ms 4608 KB Output is correct
94 Correct 1663 ms 4484 KB Output is correct
95 Correct 1708 ms 4372 KB Output is correct
96 Correct 2172 ms 4372 KB Output is correct
97 Correct 2148 ms 4376 KB Output is correct
98 Correct 1516 ms 4492 KB Output is correct
99 Correct 1661 ms 4376 KB Output is correct
100 Correct 1714 ms 4356 KB Output is correct
101 Correct 1581 ms 4352 KB Output is correct
102 Correct 1477 ms 4484 KB Output is correct
103 Correct 1431 ms 4488 KB Output is correct
104 Correct 1363 ms 4500 KB Output is correct
105 Correct 889 ms 4448 KB Output is correct