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답안 #594464

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
594464 2022-07-12T13:30:16 Z davi_bart 말 (IOI15_horses) C++14
100 / 100
 839 ms 90980 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>

#include "horses.h"
using namespace std;
#define ll long long
#define int ll
#define fi first
#define se second
#define ld long double
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
static const int mod = 1e9 + 7;
int pot(int a, int b) {
    if (b == 0) return 1;
    int x = pot(a, b / 2);
    if (b % 2) return x * x % mod * a % mod;
    return x * x % mod;
}
struct segment {
    static const int dim = 1 << 19;
    struct node {
        ld log = 0;
        int mod = 1;
        ld lazy_log = 0;
        int lazy_mod = 1;
    };
    vector<node> s = vector<node>(2 * dim);
    void prop(int pos) {
        if (s[pos].lazy_log != 0) {
            s[pos].log += s[pos].lazy_log;
            if (pos < dim) {
                s[2 * pos].lazy_log += s[pos].lazy_log;
                s[2 * pos + 1].lazy_log += s[pos].lazy_log;
            }
            s[pos].lazy_log = 0;
        }
        if (s[pos].lazy_mod > 1) {
            s[pos].mod = s[pos].mod * s[pos].lazy_mod % mod;
            if (pos < dim) {
                s[2 * pos].lazy_mod = s[2 * pos].lazy_mod * s[pos].lazy_mod % mod;
                s[2 * pos + 1].lazy_mod = s[2 * pos + 1].lazy_mod * s[pos].lazy_mod % mod;
            }
            s[pos].lazy_mod = 1;
        }
    }
    void upd(int pos, int l, int r, int a, int b, ld log_, int mod_) {
        prop(pos);
        if (b < l || r < a) return;
        if (a <= l && r <= b) {
            s[pos].lazy_log += log_;
            s[pos].lazy_mod = s[pos].lazy_mod * mod_ % mod;
            prop(pos);
            return;
        }
        int m = (l + r) / 2;
        upd(2 * pos, l, m, a, b, log_, mod_);
        upd(2 * pos + 1, m + 1, r, a, b, log_, mod_);

        if (s[2 * pos].log > s[2 * pos + 1].log)
            s[pos] = s[2 * pos];
        else
            s[pos] = s[2 * pos + 1];
    }
    void upd(int a, int b, ld log_, int mod_) {
        upd(1, 0, dim - 1, a, b, log_, mod_);
    }
    int query() {
        prop(1);
        // cout << s[1].log << " " << s[1].lazy_mod << " " << s[1].lazy_log << endl;
        return s[1].mod;
    }

} seg;
vector<int> X, Y;
int N;
int calc() {
    int ma = 0;
    int cur = 1;
    for (int i = 0; i < N; i++) {
        cur *= X[i];
        ma = max(ma, cur * Y[i] % mod);
    }
    return ma;
}
signed init(signed N, signed x[], signed y[]) {
    ::N = N;
    for (int i = 0; i < N; i++) {
        X.pb(x[i]);
        Y.pb(y[i]);
        seg.upd(i, N, log(X[i]), X[i]);
        seg.upd(i, i, log(Y[i]), Y[i]);
    }
    return seg.query();
}

signed updateX(signed pos, signed val) {
    seg.upd(pos, N, -log(X[pos]) + log(val), val * pot(X[pos], mod - 2) % mod);
    X[pos] = val;
    // seg.upd(pos, N, log(val), val);
    return seg.query();
}

signed updateY(signed pos, signed val) {
    seg.upd(pos, pos, -log(Y[pos]) + log(val), pot(Y[pos], mod - 2) * val % mod);
    Y[pos] = val;
    // seg.upd(pos, pos, log(val), val);
    return seg.query();
}

Compilation message

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:86:20: warning: declaration of 'N' shadows a global declaration [-Wshadow]
   86 | signed init(signed N, signed x[], signed y[]) {
      |             ~~~~~~~^
horses.cpp:76:5: note: shadowed declaration is here
   76 | int N;
      |     ^
horses.cpp:94:21: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   94 |     return seg.query();
      |            ~~~~~~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:101:21: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  101 |     return seg.query();
      |            ~~~~~~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:108:21: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  108 |     return seg.query();
      |            ~~~~~~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 65892 KB Output is correct
2 Correct 34 ms 65952 KB Output is correct
3 Correct 37 ms 65872 KB Output is correct
4 Correct 38 ms 65868 KB Output is correct
5 Correct 35 ms 65944 KB Output is correct
6 Correct 37 ms 65876 KB Output is correct
7 Correct 36 ms 65872 KB Output is correct
8 Correct 36 ms 65864 KB Output is correct
9 Correct 36 ms 65848 KB Output is correct
10 Correct 36 ms 65868 KB Output is correct
11 Correct 36 ms 65876 KB Output is correct
12 Correct 37 ms 65864 KB Output is correct
13 Correct 36 ms 65892 KB Output is correct
14 Correct 36 ms 65932 KB Output is correct
15 Correct 35 ms 65876 KB Output is correct
16 Correct 36 ms 65868 KB Output is correct
17 Correct 35 ms 65896 KB Output is correct
18 Correct 36 ms 65928 KB Output is correct
19 Correct 38 ms 65948 KB Output is correct
20 Correct 36 ms 65976 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 65968 KB Output is correct
2 Correct 35 ms 65868 KB Output is correct
3 Correct 36 ms 65964 KB Output is correct
4 Correct 36 ms 65960 KB Output is correct
5 Correct 36 ms 65876 KB Output is correct
6 Correct 37 ms 65904 KB Output is correct
7 Correct 35 ms 65876 KB Output is correct
8 Correct 36 ms 65844 KB Output is correct
9 Correct 36 ms 65908 KB Output is correct
10 Correct 36 ms 65904 KB Output is correct
11 Correct 35 ms 65868 KB Output is correct
12 Correct 37 ms 65948 KB Output is correct
13 Correct 37 ms 65844 KB Output is correct
14 Correct 38 ms 65916 KB Output is correct
15 Correct 36 ms 65996 KB Output is correct
16 Correct 36 ms 65868 KB Output is correct
17 Correct 35 ms 65892 KB Output is correct
18 Correct 36 ms 65892 KB Output is correct
19 Correct 36 ms 65940 KB Output is correct
20 Correct 38 ms 65868 KB Output is correct
21 Correct 36 ms 65896 KB Output is correct
22 Correct 36 ms 65928 KB Output is correct
23 Correct 38 ms 65896 KB Output is correct
24 Correct 38 ms 65892 KB Output is correct
25 Correct 37 ms 65996 KB Output is correct
26 Correct 38 ms 65928 KB Output is correct
27 Correct 37 ms 65920 KB Output is correct
28 Correct 38 ms 65996 KB Output is correct
29 Correct 37 ms 65992 KB Output is correct
30 Correct 38 ms 65996 KB Output is correct
31 Correct 37 ms 65944 KB Output is correct
32 Correct 37 ms 65924 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 663 ms 78892 KB Output is correct
2 Correct 839 ms 78888 KB Output is correct
3 Correct 804 ms 78972 KB Output is correct
4 Correct 839 ms 78872 KB Output is correct

Subtask #4
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 65876 KB Output is correct
2 Correct 35 ms 65912 KB Output is correct
3 Correct 36 ms 65940 KB Output is correct
4 Correct 35 ms 65940 KB Output is correct
5 Correct 36 ms 65876 KB Output is correct
6 Correct 36 ms 65836 KB Output is correct
7 Correct 36 ms 65868 KB Output is correct
8 Correct 35 ms 65956 KB Output is correct
9 Correct 37 ms 65940 KB Output is correct
10 Correct 37 ms 65836 KB Output is correct
11 Correct 36 ms 65952 KB Output is correct
12 Correct 36 ms 65908 KB Output is correct
13 Correct 36 ms 65956 KB Output is correct
14 Correct 36 ms 65924 KB Output is correct
15 Correct 36 ms 65840 KB Output is correct
16 Correct 36 ms 65892 KB Output is correct
17 Correct 38 ms 65860 KB Output is correct
18 Correct 36 ms 65948 KB Output is correct
19 Correct 36 ms 65860 KB Output is correct
20 Correct 36 ms 65868 KB Output is correct
21 Correct 36 ms 65868 KB Output is correct
22 Correct 36 ms 65924 KB Output is correct
23 Correct 38 ms 65956 KB Output is correct
24 Correct 38 ms 65984 KB Output is correct
25 Correct 37 ms 65988 KB Output is correct
26 Correct 37 ms 65996 KB Output is correct
27 Correct 37 ms 65988 KB Output is correct
28 Correct 38 ms 65988 KB Output is correct
29 Correct 37 ms 65988 KB Output is correct
30 Correct 38 ms 65936 KB Output is correct
31 Correct 37 ms 65932 KB Output is correct
32 Correct 37 ms 65928 KB Output is correct
33 Correct 553 ms 78000 KB Output is correct
34 Correct 515 ms 77912 KB Output is correct
35 Correct 630 ms 78152 KB Output is correct
36 Correct 630 ms 78028 KB Output is correct
37 Correct 503 ms 78116 KB Output is correct
38 Correct 530 ms 78092 KB Output is correct
39 Correct 488 ms 78004 KB Output is correct
40 Correct 609 ms 77920 KB Output is correct
41 Correct 466 ms 78020 KB Output is correct
42 Correct 474 ms 77932 KB Output is correct
43 Correct 607 ms 77860 KB Output is correct
44 Correct 611 ms 77944 KB Output is correct

Subtask #5
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 65876 KB Output is correct
2 Correct 35 ms 65852 KB Output is correct
3 Correct 36 ms 65920 KB Output is correct
4 Correct 38 ms 65868 KB Output is correct
5 Correct 37 ms 65860 KB Output is correct
6 Correct 36 ms 65868 KB Output is correct
7 Correct 37 ms 65848 KB Output is correct
8 Correct 37 ms 65920 KB Output is correct
9 Correct 38 ms 65888 KB Output is correct
10 Correct 36 ms 65836 KB Output is correct
11 Correct 34 ms 65876 KB Output is correct
12 Correct 36 ms 65920 KB Output is correct
13 Correct 37 ms 65952 KB Output is correct
14 Correct 36 ms 65880 KB Output is correct
15 Correct 36 ms 65972 KB Output is correct
16 Correct 37 ms 65940 KB Output is correct
17 Correct 36 ms 65836 KB Output is correct
18 Correct 37 ms 65908 KB Output is correct
19 Correct 36 ms 65964 KB Output is correct
20 Correct 35 ms 65848 KB Output is correct
21 Correct 36 ms 65948 KB Output is correct
22 Correct 36 ms 65928 KB Output is correct
23 Correct 39 ms 65996 KB Output is correct
24 Correct 38 ms 65928 KB Output is correct
25 Correct 38 ms 66004 KB Output is correct
26 Correct 38 ms 65988 KB Output is correct
27 Correct 37 ms 65924 KB Output is correct
28 Correct 38 ms 65984 KB Output is correct
29 Correct 38 ms 65992 KB Output is correct
30 Correct 38 ms 65920 KB Output is correct
31 Correct 37 ms 65908 KB Output is correct
32 Correct 39 ms 65900 KB Output is correct
33 Correct 644 ms 79048 KB Output is correct
34 Correct 824 ms 79104 KB Output is correct
35 Correct 796 ms 78892 KB Output is correct
36 Correct 835 ms 79108 KB Output is correct
37 Correct 529 ms 78124 KB Output is correct
38 Correct 506 ms 77988 KB Output is correct
39 Correct 626 ms 77980 KB Output is correct
40 Correct 674 ms 78000 KB Output is correct
41 Correct 476 ms 77916 KB Output is correct
42 Correct 534 ms 78072 KB Output is correct
43 Correct 476 ms 77940 KB Output is correct
44 Correct 612 ms 77944 KB Output is correct
45 Correct 466 ms 78192 KB Output is correct
46 Correct 471 ms 77928 KB Output is correct
47 Correct 599 ms 77860 KB Output is correct
48 Correct 605 ms 77824 KB Output is correct
49 Correct 727 ms 83912 KB Output is correct
50 Correct 711 ms 84060 KB Output is correct
51 Correct 703 ms 90980 KB Output is correct
52 Correct 733 ms 90160 KB Output is correct
53 Correct 636 ms 82236 KB Output is correct
54 Correct 635 ms 82876 KB Output is correct
55 Correct 588 ms 81164 KB Output is correct
56 Correct 734 ms 85792 KB Output is correct
57 Correct 526 ms 81620 KB Output is correct
58 Correct 532 ms 82184 KB Output is correct
59 Correct 606 ms 84320 KB Output is correct