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답안 #593746

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
593746 2022-07-11T14:27:17 Z vovik Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 1072 ms 4264 KB 
#include <bits/stdc++.h>

namespace IO {
    const int DPAIRSIZ = 1 << 10;
    char BB[DPAIRSIZ], *SS = BB, *TT = BB;

    inline char getcha() {
        return SS == TT && (TT = (SS = BB) + fread(BB, 1, DPAIRSIZ, stdin), SS == TT) ? EOF : *SS++;
    }

    template<typename T = int>
    inline T read() {
        T x = 0;
        int fu = 1;
        char c = getcha();
        while (c > 57 || c < 48) {
            if (c == 45) fu = -1;
            c = getcha();
        }
        while (c <= 57 && c >= 48) {
            x = x * 10 + c - 48;
            c = getcha();
        }
        x *= fu;
        return x;
    }

    template<typename T>
    inline void read(T &x) {
        x = 0;
        int fu = 1;
        char c = getcha();
        while (c > 57 || c < 48) {
            if (c == 45) fu = -1;
            c = getcha();
        }
        while (c <= 57 && c >= 48) {
            x = x * 10 + c - 48;
            c = getcha();
        }
        x *= fu;
    }

    template<typename T>
    inline void read(T *bg, T *ed) { while (bg != ed) read(*bg++); }

    inline void read(char &ch) {
        ch = getcha();
        while (ch <= 32) ch = getcha();
    }

    inline void read(char *s) {
        char ch = getcha();
        while (ch <= 32) ch = getcha();
        while (ch > 32) *s++ = ch, ch = getcha();
        *s = '\0';
    }

    inline void read(std::string &s) {
        char ch = getcha();
        while (ch <= 32) ch = getcha();
        while (ch > 32) s.push_back(ch), ch = getcha();
    }

    inline void sread(char *s) {
        char ch = getcha();
        while (ch < 32) ch = getcha();
        while (ch >= 32) *s++ = ch, ch = getcha();
        *s = '\0';
    }

    inline void pread(char *&s) {
        char ch = getcha();
        while (ch <= 32) ch = getcha();
        while (ch > 32) *s++ = ch, ch = getcha();
        *s = '\0';
    }

    inline void spread(char *&s) {
        char ch = getcha();
        while (ch < 32) ch = getcha();
        while (ch >= 32) *s++ = ch, ch = getcha();
        *s = '\0';
    }

    template<typename T, typename ...Args>
    inline void read(T &x, Args &...args) {
        read(x);
        read(args...);
    }

    char out[DPAIRSIZ], *Out = out;
#define flush() fwrite(out, 1, Out - out, stdout)

    inline void putcha(char x) {
        *Out++ = x;
        if (Out - out >= (DPAIRSIZ)) flush(), Out = out;
    }

    template<typename T>
    inline void fprint(T x) {
        if (x < 0) putcha(45), x = -x;
        if (x > 9) fprint(x / 10);
        putcha(x % 10 + 48);
    }

    inline void print() { putcha(10); }

    template<typename T>
    inline void print(T x) {
        fprint(x);
        putcha(10);
    }

    inline void print(char *ch) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(10);
    }

    inline void put(char *ch) { while (*ch != '\0') putcha(*(ch++)); }

    inline void print(const char *ch) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(10);
    }

    inline void put(const char *ch) { while (*ch != '\0') putcha(*(ch++)); }

    template<typename T, typename ...Args>
    inline void print(T x, Args ...args) {
        fprint(x);
        putcha(32);
        print(args...);
    }

    template<typename ...Args>
    inline void print(const char *ch, Args ...args) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(32);
        print(args...);
    }

    template<typename ...Args>
    inline void print(char *ch, Args ...args) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(32);
        print(args...);
    }

    template<typename T, typename ...Args>
    inline void printl(T x, Args ...args) {
        fprint(x);
        putcha(10);
        printl(args...);
    }

    template<typename ...Args>
    inline void printl(const char *ch, Args ...args) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(10);
        printl(args...);
    }

    template<typename ...Args>
    inline void printl(char *ch, Args ...args) {
        while (*ch != '\0') putcha(*(ch++));
        putcha(10);
        printl(args...);
    }

    template<typename T>
    inline void sprint(T x) {
        fprint(x);
        putcha(32);
    }

    template<typename T, typename ...Args>
    inline void sprint(T x, Args ...args) {
        fprint(x);
        putcha(32);
        sprint(args...);
    }

    template<typename T>
    inline void sprint(T *bg, T *ed) { while (bg != ed) sprint(*bg++); }

    template<typename T>
    inline void print(T *bg, T *ed) {
        while (bg != ed) sprint(*bg++);
        putcha(10);
    }

    template<typename T>
    inline void printl(T *bg, T *ed) { while (bg != ed) print(*bg++); }

    class AutoFlush {
    public:
        ~AutoFlush() { flush(); }
    } __AutoFlush;
} // namespace IO
using namespace IO;

#define vc vector

#define nd node*
#define pnd pair<nd, nd>

using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<ll> vll;
typedef pair<ll, ll> pll;
typedef vc<pll> vpll;
typedef vc<vll> vvll;
typedef vc<vpll> vvpll;

template<const ll MOD>
struct mod_mul : std::multiplies<const ll> {
    ll operator()(const ll a, const ll b) {
        return (a * b) % MOD;
    }
};


template<typename T>
inline void sort(T &a) {
    sort(a.begin(), a.end());
}

template<typename T>
inline void unique(T &a) {
    a.resize(unique(a.begin(), a.end()) - a.begin());
}

template<typename T>
inline void reverse(T &a) {
    reverse(a.begin(), a.end());
}

const ll INF = 9023372036854775808ll;
const ll MOD = 1000000007ll;

struct state {
    int a, b;
};

int main() {
    int n, k;
    read(n, k);
    vc<state> a(n);
    for (auto &i : a) {
        read(i.a, i.b);
        if (i.b < 0) i.b = 1e9;
    }
    sort(a.begin(), a.end(), [](const auto &x, const auto &y) {return x.b < y.b;});
    ld ans = INF;
    for (int sz = 0; sz < k; ++sz) {
        vc<vc<ld>> dp(n + 1, vc<ld>((k - sz) + 1, INF));
        dp[0][0] = 0;
        for (int i = 0; i < n; ++i) {
            for (int cnt = 0; cnt <= k - sz; ++cnt) {
                int done = i - cnt;
                if (done < sz) {
                    dp[i + 1][cnt] = min(dp[i + 1][cnt], dp[i][cnt] + ((ld)a[i].b / (done + 1)));
                } else {
                    dp[i + 1][cnt] = min(dp[i + 1][cnt], dp[i][cnt]);
                }
                if (cnt + 1 <= k - sz) dp[i + 1][cnt + 1] = min(dp[i + 1][cnt + 1], dp[i][cnt] + (ld)a[i].a / (sz + 1));
            }
        }
        ans = min(ans, dp[n][k - sz]);
    }
    cout.precision(18);
    cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 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 212 KB Output is correct
5 Correct 11 ms 704 KB Output is correct
6 Correct 62 ms 1276 KB Output is correct
7 Correct 250 ms 2260 KB Output is correct
8 Correct 568 ms 3260 KB Output is correct
9 Correct 1022 ms 4232 KB Output is correct
10 Correct 491 ms 3072 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 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 212 KB Output is correct
5 Correct 11 ms 704 KB Output is correct
6 Correct 62 ms 1276 KB Output is correct
7 Correct 250 ms 2260 KB Output is correct
8 Correct 568 ms 3260 KB Output is correct
9 Correct 1022 ms 4232 KB Output is correct
10 Correct 491 ms 3072 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 116 ms 1492 KB Output is correct
13 Correct 109 ms 1492 KB Output is correct
14 Correct 104 ms 1492 KB Output is correct
15 Correct 514 ms 3072 KB Output is correct
16 Correct 554 ms 3072 KB Output is correct
17 Correct 506 ms 3072 KB Output is correct
18 Correct 1072 ms 4248 KB Output is correct
19 Correct 1054 ms 4228 KB Output is correct
20 Correct 1055 ms 4228 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 2 ms 340 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 4 ms 548 KB Output is correct
48 Correct 4 ms 468 KB Output is correct
49 Correct 5 ms 456 KB Output is correct
50 Correct 5 ms 456 KB Output is correct
51 Correct 7 ms 548 KB Output is correct
52 Correct 8 ms 472 KB Output is correct
53 Correct 3 ms 468 KB Output is correct
54 Correct 4 ms 468 KB Output is correct
55 Correct 4 ms 468 KB Output is correct
56 Correct 3 ms 468 KB Output is correct
57 Correct 3 ms 468 KB Output is correct
58 Correct 5 ms 468 KB Output is correct
59 Correct 4 ms 468 KB Output is correct
60 Correct 4 ms 436 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1056 ms 4256 KB Output is correct
2 Correct 1016 ms 4224 KB Output is correct
3 Correct 1039 ms 4244 KB Output is correct
4 Correct 1039 ms 4264 KB Output is correct
5 Correct 1016 ms 4228 KB Output is correct
6 Correct 1033 ms 4260 KB Output is correct
7 Correct 1051 ms 4232 KB Output is correct

Subtask #7
23.0 / 23.0

# 결과 실행 시간 메모리 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 212 KB Output is correct
5 Correct 11 ms 704 KB Output is correct
6 Correct 62 ms 1276 KB Output is correct
7 Correct 250 ms 2260 KB Output is correct
8 Correct 568 ms 3260 KB Output is correct
9 Correct 1022 ms 4232 KB Output is correct
10 Correct 491 ms 3072 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 116 ms 1492 KB Output is correct
13 Correct 109 ms 1492 KB Output is correct
14 Correct 104 ms 1492 KB Output is correct
15 Correct 514 ms 3072 KB Output is correct
16 Correct 554 ms 3072 KB Output is correct
17 Correct 506 ms 3072 KB Output is correct
18 Correct 1072 ms 4248 KB Output is correct
19 Correct 1054 ms 4228 KB Output is correct
20 Correct 1055 ms 4228 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 1 ms 212 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 2 ms 340 KB Output is correct
66 Correct 2 ms 468 KB Output is correct
67 Correct 4 ms 548 KB Output is correct
68 Correct 4 ms 468 KB Output is correct
69 Correct 5 ms 456 KB Output is correct
70 Correct 5 ms 456 KB Output is correct
71 Correct 7 ms 548 KB Output is correct
72 Correct 8 ms 472 KB Output is correct
73 Correct 3 ms 468 KB Output is correct
74 Correct 4 ms 468 KB Output is correct
75 Correct 4 ms 468 KB Output is correct
76 Correct 3 ms 468 KB Output is correct
77 Correct 3 ms 468 KB Output is correct
78 Correct 5 ms 468 KB Output is correct
79 Correct 4 ms 468 KB Output is correct
80 Correct 4 ms 436 KB Output is correct
81 Correct 1056 ms 4256 KB Output is correct
82 Correct 1016 ms 4224 KB Output is correct
83 Correct 1039 ms 4244 KB Output is correct
84 Correct 1039 ms 4264 KB Output is correct
85 Correct 1016 ms 4228 KB Output is correct
86 Correct 1033 ms 4260 KB Output is correct
87 Correct 1051 ms 4232 KB Output is correct
88 Correct 12 ms 724 KB Output is correct
89 Correct 11 ms 724 KB Output is correct
90 Correct 64 ms 1276 KB Output is correct
91 Correct 64 ms 1276 KB Output is correct
92 Correct 277 ms 2304 KB Output is correct
93 Correct 259 ms 2260 KB Output is correct
94 Correct 561 ms 3260 KB Output is correct
95 Correct 620 ms 3260 KB Output is correct
96 Correct 831 ms 3860 KB Output is correct
97 Correct 861 ms 3840 KB Output is correct
98 Correct 499 ms 3072 KB Output is correct
99 Correct 483 ms 3072 KB Output is correct
100 Correct 548 ms 3072 KB Output is correct
101 Correct 487 ms 3072 KB Output is correct
102 Correct 481 ms 3136 KB Output is correct
103 Correct 498 ms 3072 KB Output is correct
104 Correct 490 ms 3072 KB Output is correct
105 Correct 499 ms 3072 KB Output is correct