oj.uz

Submission #908035

# Submission time Handle Problem Language Result Execution time Memory
908035 2024-01-16T07:15:55 Z gaga999 Let's Win the Election (JOI22_ho_t3) C++17
72 / 100
 2500 ms 2600 KB 
#include <cstdio>
#include <stdio.h>
#include <iostream>
#include <math.h>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <algorithm>
#include <utility>
#include <set>
#include <map>
#include <stdlib.h>
#include <cstring>
#include <string.h>
#include <string>
#include <sstream>
#include <assert.h>
#include <climits>
#include <sstream>
#include <numeric>
#include <time.h>
#include <limits.h>
#include <list>
#include <bitset>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <iomanip>
#include <complex>
#include <chrono>
#include <fstream>
#include <functional>
#include <unistd.h>
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx,avx2,bmi,bmi2,lzcnt,popcnt")
#define lowbit(x) ((x) & -(x))
#define ml(a, b) ((1ll * (a) * (b)) % M)
#define tml(a, b) (a) = ((1ll * (a) * (b)) % M)
#define ad(a, b) ((0ll + (a) + (b)) % M)
#define tad(a, b) (a) = ((0ll + (a) + (b)) % M)
#define mi(a, b) ((0ll + M + (a) - (b)) % M)
#define tmi(a, b) (a) = ((0ll + M + (a) - (b)) % M)
#define tmin(a, b) (a) = min((a), (b))
#define tmax(a, b) (a) = max((a), (b))
#define iter(a) (a).begin(), (a).end()
#define riter(a) (a).rbegin(), (a).rend()
#define init(a, b) memset((a), (b), sizeof(a))
#define cpy(a, b) memcpy((a), (b), sizeof(a))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define pb emplace_back
#define mpr make_pair
#define ls(i) ((i) << 1)
#define rs(i) ((i) << 1 | 1)
#define INF 0x3f3f3f3f
#define NIF 0xc0c0c0c0
#define eps 1e-9
#define F first
#define S second
#define AC cin.tie(0)->sync_with_stdio(0)
using namespace std;
typedef long long llt;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef pair<llt, llt> pll;
typedef complex<double> cd;
// const int M = 998244353;

// random_device rm;
// mt19937 rg(rm());
// default_random_engine rg(rm());
// uniform_int_distribution<int> rd(INT_MIN, INT_MAX);
// uniform_real_distribution<double> rd(0, M_PI);

void db() { cerr << "\n"; }
template <class T, class... U>
void db(T a, U... b) { cerr << a << " ", db(b...); }

inline char gc()
{
    const static int SZ = 1 << 16;
    static char buf[SZ], *p1, *p2;
    if (p1 == p2 && (p2 = buf + fread(p1 = buf, 1, SZ, stdin), p1 == p2))
        return -1;
    return *p1++;
}
void rd() {}
template <typename T, typename... U>
void rd(T &x, U &...y)
{
    x = 0;
    bool f = 0;
    char c = gc();
    while (!isdigit(c))
        f ^= !(c ^ 45), c = gc();
    while (isdigit(c))
        x = (x << 1) + (x << 3) + (c ^ 48), c = gc();
    f && (x = -x), rd(y...);
}

template <typename T>
void prt(T x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x > 9)
        prt(x / 10);
    putchar((x % 10) ^ 48);
}

const int N = 505;
pii ar[N];
double dp[N][N];

signed main()
{
    int n, k;
    rd(n, k);
    for (int i = 0; i < n; i++)
    {
        rd(ar[i].S, ar[i].F);
        if (!~ar[i].F)
            ar[i].F = INF;
    }
    sort(ar, ar + n);
    double ans = 1e12;
    auto slv = [&](int t) -> double
    {
        for (int i = 0; i <= t; i++)
            fill(dp[i], dp[i] + k + 1, 1e12);
        dp[0][0] = 0;
        for (int p = 0; p < n; p++)
        {
            for (int j = min(k, p + 1); j > 0; j--)
            {
                for (int i = min(t, p + 1); i >= 0; i--)
                {
                    if (i)
                        tmin(dp[i][j], dp[i - 1][j - 1] + ar[p].F / double(i));
                    tmin(dp[i][j], dp[i][j - 1] + ar[p].S / double(t + 1));
                }
            }
        }
        tmin(ans, dp[t][k]);
        return dp[t][k];
    };
    int l = 0, r = k;
    while (l < r - 2)
    {
        int m1 = (l * 2 + r) / 3, m2 = (l + r * 2) / 3;
        if (slv(m1) < slv(m2))
            r = m2;
        else
            l = m1;
    }
    for (int i = l; i <= r; i++)
        slv(i);
    printf("%.10lf\n", ans);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 448 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 7 ms 588 KB Output is correct
6 Correct 41 ms 756 KB Output is correct
7 Correct 134 ms 1084 KB Output is correct
8 Correct 247 ms 1420 KB Output is correct
9 Correct 338 ms 1752 KB Output is correct
10 Correct 229 ms 1348 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 448 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 7 ms 588 KB Output is correct
6 Correct 41 ms 756 KB Output is correct
7 Correct 134 ms 1084 KB Output is correct
8 Correct 247 ms 1420 KB Output is correct
9 Correct 338 ms 1752 KB Output is correct
10 Correct 229 ms 1348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 415 ms 1020 KB Output is correct
13 Correct 245 ms 848 KB Output is correct
14 Correct 134 ms 832 KB Output is correct
15 Correct 1752 ms 1972 KB Output is correct
16 Correct 1357 ms 1508 KB Output is correct
17 Correct 824 ms 1372 KB Output is correct
18 Execution timed out 2558 ms 2600 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 444 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 600 KB Output is correct
24 Correct 1 ms 444 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 2 ms 344 KB Output is correct
44 Correct 3 ms 348 KB Output is correct
45 Correct 5 ms 604 KB Output is correct
46 Correct 5 ms 348 KB Output is correct
47 Correct 4 ms 624 KB Output is correct
48 Correct 7 ms 604 KB Output is correct
49 Correct 10 ms 604 KB Output is correct
50 Correct 11 ms 600 KB Output is correct
51 Correct 11 ms 760 KB Output is correct
52 Correct 12 ms 604 KB Output is correct
53 Correct 3 ms 444 KB Output is correct
54 Correct 5 ms 604 KB Output is correct
55 Correct 7 ms 604 KB Output is correct
56 Correct 5 ms 604 KB Output is correct
57 Correct 9 ms 600 KB Output is correct
58 Correct 11 ms 600 KB Output is correct
59 Correct 8 ms 604 KB Output is correct
60 Correct 6 ms 604 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1769 ms 1972 KB Output is correct
2 Correct 1786 ms 1980 KB Output is correct
3 Correct 2012 ms 2112 KB Output is correct
4 Correct 2099 ms 2376 KB Output is correct
5 Correct 2165 ms 2268 KB Output is correct
6 Correct 1510 ms 1624 KB Output is correct
7 Correct 2145 ms 2272 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 448 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 7 ms 588 KB Output is correct
6 Correct 41 ms 756 KB Output is correct
7 Correct 134 ms 1084 KB Output is correct
8 Correct 247 ms 1420 KB Output is correct
9 Correct 338 ms 1752 KB Output is correct
10 Correct 229 ms 1348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 415 ms 1020 KB Output is correct
13 Correct 245 ms 848 KB Output is correct
14 Correct 134 ms 832 KB Output is correct
15 Correct 1752 ms 1972 KB Output is correct
16 Correct 1357 ms 1508 KB Output is correct
17 Correct 824 ms 1372 KB Output is correct
18 Execution timed out 2558 ms 2600 KB Time limit exceeded
19 Halted 0 ms 0 KB -