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답안 #594462

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
594462 2022-07-12T13:29:08 Z davi_bart 말 (IOI15_horses) C++14
54 / 100
 681 ms 58716 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 {
        double log = 0;
        int mod = 1;
        double 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, double 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, double 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 13 ms 33108 KB Output is correct
2 Correct 13 ms 33120 KB Output is correct
3 Correct 13 ms 33144 KB Output is correct
4 Correct 13 ms 33092 KB Output is correct
5 Correct 13 ms 33124 KB Output is correct
6 Correct 13 ms 33116 KB Output is correct
7 Correct 15 ms 33108 KB Output is correct
8 Correct 13 ms 33108 KB Output is correct
9 Correct 13 ms 33108 KB Output is correct
10 Correct 14 ms 33152 KB Output is correct
11 Correct 13 ms 33108 KB Output is correct
12 Correct 14 ms 33148 KB Output is correct
13 Correct 14 ms 33056 KB Output is correct
14 Correct 15 ms 33136 KB Output is correct
15 Correct 15 ms 33108 KB Output is correct
16 Correct 15 ms 33108 KB Output is correct
17 Correct 14 ms 33108 KB Output is correct
18 Correct 13 ms 33108 KB Output is correct
19 Correct 13 ms 33108 KB Output is correct
20 Correct 13 ms 33108 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 33128 KB Output is correct
2 Correct 13 ms 33120 KB Output is correct
3 Correct 14 ms 33116 KB Output is correct
4 Correct 13 ms 33056 KB Output is correct
5 Correct 16 ms 33144 KB Output is correct
6 Correct 13 ms 33084 KB Output is correct
7 Correct 13 ms 33108 KB Output is correct
8 Correct 15 ms 33112 KB Output is correct
9 Correct 17 ms 33108 KB Output is correct
10 Correct 14 ms 33108 KB Output is correct
11 Correct 14 ms 33100 KB Output is correct
12 Correct 18 ms 33088 KB Output is correct
13 Correct 14 ms 33108 KB Output is correct
14 Correct 15 ms 33108 KB Output is correct
15 Correct 13 ms 33132 KB Output is correct
16 Correct 14 ms 33028 KB Output is correct
17 Correct 15 ms 33108 KB Output is correct
18 Correct 14 ms 33108 KB Output is correct
19 Correct 14 ms 33048 KB Output is correct
20 Correct 14 ms 33108 KB Output is correct
21 Correct 14 ms 33132 KB Output is correct
22 Correct 16 ms 33156 KB Output is correct
23 Correct 15 ms 33140 KB Output is correct
24 Correct 17 ms 33172 KB Output is correct
25 Correct 15 ms 33168 KB Output is correct
26 Correct 15 ms 33128 KB Output is correct
27 Correct 16 ms 33164 KB Output is correct
28 Correct 16 ms 33108 KB Output is correct
29 Correct 16 ms 33156 KB Output is correct
30 Correct 16 ms 33288 KB Output is correct
31 Correct 15 ms 33160 KB Output is correct
32 Correct 15 ms 33108 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 458 ms 47740 KB Output is correct
2 Correct 590 ms 58716 KB Output is correct
3 Correct 559 ms 49820 KB Output is correct
4 Correct 556 ms 53756 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 33108 KB Output is correct
2 Correct 13 ms 33108 KB Output is correct
3 Correct 13 ms 33108 KB Output is correct
4 Correct 13 ms 33056 KB Output is correct
5 Correct 14 ms 33072 KB Output is correct
6 Correct 15 ms 33140 KB Output is correct
7 Correct 16 ms 33116 KB Output is correct
8 Correct 16 ms 33104 KB Output is correct
9 Correct 16 ms 33108 KB Output is correct
10 Correct 15 ms 33108 KB Output is correct
11 Correct 16 ms 33120 KB Output is correct
12 Correct 14 ms 33108 KB Output is correct
13 Correct 14 ms 33128 KB Output is correct
14 Correct 14 ms 33140 KB Output is correct
15 Correct 14 ms 33032 KB Output is correct
16 Correct 14 ms 33076 KB Output is correct
17 Correct 13 ms 33108 KB Output is correct
18 Correct 13 ms 33108 KB Output is correct
19 Correct 15 ms 33140 KB Output is correct
20 Correct 14 ms 33108 KB Output is correct
21 Correct 15 ms 33116 KB Output is correct
22 Correct 14 ms 33084 KB Output is correct
23 Correct 17 ms 33152 KB Output is correct
24 Correct 16 ms 33160 KB Output is correct
25 Correct 17 ms 33184 KB Output is correct
26 Correct 19 ms 33148 KB Output is correct
27 Correct 17 ms 33160 KB Output is correct
28 Correct 15 ms 33152 KB Output is correct
29 Correct 15 ms 33160 KB Output is correct
30 Correct 16 ms 33160 KB Output is correct
31 Correct 15 ms 33164 KB Output is correct
32 Correct 16 ms 33108 KB Output is correct
33 Correct 383 ms 49060 KB Output is correct
34 Correct 365 ms 48996 KB Output is correct
35 Correct 449 ms 55984 KB Output is correct
36 Correct 427 ms 55988 KB Output is correct
37 Correct 384 ms 47280 KB Output is correct
38 Correct 389 ms 48204 KB Output is correct
39 Correct 355 ms 47184 KB Output is correct
40 Correct 412 ms 51092 KB Output is correct
41 Correct 337 ms 47188 KB Output is correct
42 Correct 425 ms 47200 KB Output is correct
43 Correct 405 ms 51472 KB Output is correct
44 Incorrect 406 ms 51428 KB Output isn't correct
45 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 33108 KB Output is correct
2 Correct 14 ms 33108 KB Output is correct
3 Correct 16 ms 33108 KB Output is correct
4 Correct 17 ms 33108 KB Output is correct
5 Correct 14 ms 33124 KB Output is correct
6 Correct 15 ms 33064 KB Output is correct
7 Correct 13 ms 33108 KB Output is correct
8 Correct 14 ms 33140 KB Output is correct
9 Correct 14 ms 33108 KB Output is correct
10 Correct 14 ms 33108 KB Output is correct
11 Correct 17 ms 33152 KB Output is correct
12 Correct 15 ms 33108 KB Output is correct
13 Correct 14 ms 33112 KB Output is correct
14 Correct 14 ms 33052 KB Output is correct
15 Correct 17 ms 33132 KB Output is correct
16 Correct 15 ms 33092 KB Output is correct
17 Correct 18 ms 33108 KB Output is correct
18 Correct 18 ms 33108 KB Output is correct
19 Correct 16 ms 33108 KB Output is correct
20 Correct 15 ms 33148 KB Output is correct
21 Correct 15 ms 33124 KB Output is correct
22 Correct 15 ms 33052 KB Output is correct
23 Correct 15 ms 33152 KB Output is correct
24 Correct 15 ms 33188 KB Output is correct
25 Correct 16 ms 33212 KB Output is correct
26 Correct 16 ms 33188 KB Output is correct
27 Correct 16 ms 33184 KB Output is correct
28 Correct 20 ms 33172 KB Output is correct
29 Correct 16 ms 33108 KB Output is correct
30 Correct 16 ms 33168 KB Output is correct
31 Correct 15 ms 33092 KB Output is correct
32 Correct 16 ms 33108 KB Output is correct
33 Correct 453 ms 49792 KB Output is correct
34 Correct 681 ms 58660 KB Output is correct
35 Correct 606 ms 49784 KB Output is correct
36 Correct 634 ms 53676 KB Output is correct
37 Correct 431 ms 49112 KB Output is correct
38 Correct 400 ms 49024 KB Output is correct
39 Correct 481 ms 55964 KB Output is correct
40 Correct 518 ms 55980 KB Output is correct
41 Correct 386 ms 47260 KB Output is correct
42 Correct 399 ms 48172 KB Output is correct
43 Correct 364 ms 47132 KB Output is correct
44 Correct 428 ms 50996 KB Output is correct
45 Correct 369 ms 47212 KB Output is correct
46 Correct 386 ms 47268 KB Output is correct
47 Correct 424 ms 51444 KB Output is correct
48 Incorrect 453 ms 51432 KB Output isn't correct
49 Halted 0 ms 0 KB -