oj.uz

Submission #828882

# Submission time Handle Problem Language Result Execution time Memory
828882 2023-08-17T18:22:26 Z green_gold_dog Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 691 ms 990696 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,abm,popcnt,mmx")
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double db;
typedef long double ldb;
typedef complex<double> cd;

constexpr ll INF64 = 9'000'000'000'000'000'000, INF32 = 2'000'000'000, MOD = 1'000'000'007;
constexpr db PI = acos(-1);
constexpr bool IS_FILE = false, IS_TEST_CASES = false;

random_device rd;
mt19937 rnd32(rd());
mt19937_64 rnd64(rd());

template<typename T>
bool assign_max(T& a, T b) {
        if (b > a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
bool assign_min(T& a, T b) {
        if (b < a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
T square(T a) {
        return a * a;
}

template<>
struct std::hash<pair<ll, ll>> {
        ll operator() (pair<ll, ll> p) const {
                return ((__int128)p.first * MOD + p.second) % INF64;
        }
};

bool cmp(pair<ll, ll> p1, pair<ll, ll> p2) {
        return p1.second < p2.second;
}

void solve() {
        ll n, k;
        cin >> n >> k;
        vector<pair<ll, ll>> arr(n);
        for (ll i = 0; i < n; i++) {
                cin >> arr[i].first >> arr[i].second;
                if (arr[i].second == -1) {
                        arr[i].second = INF32;
                }
        }
        sort(arr.begin(), arr.end(), cmp);
        vector<vector<vector<double>>> dp(n, vector<vector<double>>(n, vector<double>(n, INF32)));
        for (ll i = 0; i < n; i++) {
                dp[0][0][i] = arr[0].first / (double)(i + 1);
                if (i > 0) {
                        dp[0][1][i] = arr[0].second;
                }
        }
        for (ll i = 1; i < n; i++) {
                for (ll j = 0; j < n; j++) {
                        for (ll k = j; k < n; k++) {
                                assign_min(dp[i][j][k], dp[i - 1][j][k] + arr[i].first / (double)(k + 1));
                                if (j && arr[i].second != INF32) {
                                        assign_min(dp[i][j][k], dp[i - 1][j - 1][k] + arr[i].second / (double)j);
                                }
                        }
                }
        }
        double ans = INF32;
        multiset<ll> now;
        ll na;
        for (ll i = k; i < n; i++) {
                now.insert(arr[i].first);
        }
        ll ns = 0;
        for (ll i = k - 1; i >= 0; i--) {
                for (ll j = 0; j < n; j++) {
                        assign_min(ans, dp[i][j][j] + ns / (double)(j + 1));
                }
                now.insert(arr[i].first);
                ns += *now.begin();
                now.erase(now.begin());
        }
        assign_min(ans, (double)ns);
        cout << setprecision(100) << ans << '\n';
}

int main() {
        if (IS_FILE) {
                freopen("", "r", stdin);
                freopen("", "w", stdout);
        }
        ios_base::sync_with_stdio(false);
        cin.tie(0);
        cout.tie(0);
        ll t = 1;
        if (IS_TEST_CASES) {
                cin >> t;
        }
        for (ll i = 0; i < t; i++) {
                solve();
        }
}

Compilation message

Main.cpp: In function 'void solve()':
Main.cpp:84:12: warning: unused variable 'na' [-Wunused-variable]
   84 |         ll na;
      |            ^~
Main.cpp: In function 'int main()':
Main.cpp:103:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  103 |                 freopen("", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~
Main.cpp:104:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |                 freopen("", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 614 ms 990504 KB Output is correct
6 Correct 516 ms 990576 KB Output is correct
7 Correct 610 ms 990576 KB Output is correct
8 Correct 493 ms 990480 KB Output is correct
9 Correct 495 ms 990584 KB Output is correct
10 Correct 628 ms 990584 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 614 ms 990504 KB Output is correct
6 Correct 516 ms 990576 KB Output is correct
7 Correct 610 ms 990576 KB Output is correct
8 Correct 493 ms 990480 KB Output is correct
9 Correct 495 ms 990584 KB Output is correct
10 Correct 628 ms 990584 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 600 ms 990572 KB Output is correct
13 Correct 542 ms 990476 KB Output is correct
14 Correct 505 ms 990532 KB Output is correct
15 Correct 627 ms 990528 KB Output is correct
16 Correct 539 ms 990576 KB Output is correct
17 Correct 519 ms 990544 KB Output is correct
18 Correct 594 ms 990576 KB Output is correct
19 Correct 548 ms 990580 KB Output is correct
20 Correct 521 ms 990568 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 328 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 328 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 476 KB Output is correct
18 Correct 0 ms 336 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 344 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 424 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 328 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 476 KB Output is correct
18 Correct 0 ms 336 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 344 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 424 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 6 ms 8652 KB Output is correct
42 Correct 5 ms 8532 KB Output is correct
43 Correct 5 ms 8532 KB Output is correct
44 Correct 6 ms 8532 KB Output is correct
45 Correct 5 ms 8528 KB Output is correct
46 Correct 6 ms 8532 KB Output is correct
47 Correct 6 ms 8532 KB Output is correct
48 Correct 5 ms 8528 KB Output is correct
49 Correct 6 ms 8532 KB Output is correct
50 Correct 8 ms 8532 KB Output is correct
51 Correct 6 ms 8532 KB Output is correct
52 Correct 5 ms 8532 KB Output is correct
53 Correct 6 ms 8532 KB Output is correct
54 Correct 8 ms 8648 KB Output is correct
55 Correct 6 ms 8528 KB Output is correct
56 Correct 6 ms 8644 KB Output is correct
57 Correct 6 ms 8632 KB Output is correct
58 Correct 6 ms 8532 KB Output is correct
59 Correct 6 ms 8532 KB Output is correct
60 Correct 6 ms 8532 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 593 ms 990576 KB Output is correct
2 Correct 592 ms 990568 KB Output is correct
3 Correct 572 ms 990580 KB Output is correct
4 Correct 689 ms 990496 KB Output is correct
5 Correct 600 ms 990456 KB Output is correct
6 Correct 624 ms 990584 KB Output is correct
7 Correct 625 ms 990584 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 614 ms 990504 KB Output is correct
6 Correct 516 ms 990576 KB Output is correct
7 Correct 610 ms 990576 KB Output is correct
8 Correct 493 ms 990480 KB Output is correct
9 Correct 495 ms 990584 KB Output is correct
10 Correct 628 ms 990584 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 600 ms 990572 KB Output is correct
13 Correct 542 ms 990476 KB Output is correct
14 Correct 505 ms 990532 KB Output is correct
15 Correct 627 ms 990528 KB Output is correct
16 Correct 539 ms 990576 KB Output is correct
17 Correct 519 ms 990544 KB Output is correct
18 Correct 594 ms 990576 KB Output is correct
19 Correct 548 ms 990580 KB Output is correct
20 Correct 521 ms 990568 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 328 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 476 KB Output is correct
38 Correct 0 ms 336 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 0 ms 340 KB Output is correct
42 Correct 1 ms 336 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 1 ms 336 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 0 ms 340 KB Output is correct
52 Correct 1 ms 336 KB Output is correct
53 Correct 1 ms 344 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 424 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 6 ms 8652 KB Output is correct
62 Correct 5 ms 8532 KB Output is correct
63 Correct 5 ms 8532 KB Output is correct
64 Correct 6 ms 8532 KB Output is correct
65 Correct 5 ms 8528 KB Output is correct
66 Correct 6 ms 8532 KB Output is correct
67 Correct 6 ms 8532 KB Output is correct
68 Correct 5 ms 8528 KB Output is correct
69 Correct 6 ms 8532 KB Output is correct
70 Correct 8 ms 8532 KB Output is correct
71 Correct 6 ms 8532 KB Output is correct
72 Correct 5 ms 8532 KB Output is correct
73 Correct 6 ms 8532 KB Output is correct
74 Correct 8 ms 8648 KB Output is correct
75 Correct 6 ms 8528 KB Output is correct
76 Correct 6 ms 8644 KB Output is correct
77 Correct 6 ms 8632 KB Output is correct
78 Correct 6 ms 8532 KB Output is correct
79 Correct 6 ms 8532 KB Output is correct
80 Correct 6 ms 8532 KB Output is correct
81 Correct 593 ms 990576 KB Output is correct
82 Correct 592 ms 990568 KB Output is correct
83 Correct 572 ms 990580 KB Output is correct
84 Correct 689 ms 990496 KB Output is correct
85 Correct 600 ms 990456 KB Output is correct
86 Correct 624 ms 990584 KB Output is correct
87 Correct 625 ms 990584 KB Output is correct
88 Correct 656 ms 990540 KB Output is correct
89 Correct 581 ms 990580 KB Output is correct
90 Correct 645 ms 990496 KB Output is correct
91 Correct 593 ms 990460 KB Output is correct
92 Correct 600 ms 990576 KB Output is correct
93 Correct 591 ms 990696 KB Output is correct
94 Correct 592 ms 990580 KB Output is correct
95 Correct 592 ms 990588 KB Output is correct
96 Correct 653 ms 990516 KB Output is correct
97 Correct 590 ms 990648 KB Output is correct
98 Correct 691 ms 990580 KB Output is correct
99 Correct 644 ms 990580 KB Output is correct
100 Correct 583 ms 990584 KB Output is correct
101 Correct 625 ms 990652 KB Output is correct
102 Correct 584 ms 990468 KB Output is correct
103 Correct 662 ms 990580 KB Output is correct
104 Correct 589 ms 990516 KB Output is correct
105 Correct 611 ms 990580 KB Output is correct