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답안 #1039839

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1039839 2024-07-31T10:18:30 Z Zicrus 말 (IOI15_horses) C++17
54 / 100
 1500 ms 34128 KB 
#include <bits/stdc++.h>
#include "horses.h"
using namespace std;

typedef long long ll;

ll n, pow2;
vector<ll> segMul;
vector<bool> segOF;
vector<ll> x, y;

#define MOD (1000000007)

void setX(int pos, int val) {
    x[pos] = val;
    pos += pow2;
    segMul[pos] = val;
    pos /= 2;
    while (pos) {
        segMul[pos] = segMul[2*pos] * segMul[2*pos+1];
        if (segOF[2*pos] || segOF[2*pos+1] || segMul[pos] > MOD) {
            segMul[pos] %= MOD;
            segOF[pos] = true;
        }
        else {
            segOF[pos] = false;
        }
        pos /= 2;
    }
}

int getOFId(int i = 1, ll prod = 1) {
    if (i >= pow2) return i-pow2;
    if (segOF[2*i+1] || segMul[2*i+1] * prod >= MOD) return getOFId(2*i+1, prod);
    return getOFId(2*i, prod * segMul[2*i+1]);
}

int getMulMod(int i) {
    int low = pow2, high = pow2+i;
    ll res = 1;
    while (low <= high) {
        if (low & 1) res = (res * segMul[low++]) % MOD;
        if (!(high & 1)) res = (res * segMul[high--]) % MOD;
        low /= 2; high /= 2;
    }
    return res % MOD;
}

int calc() {
    ll ofId = getOFId();
    ll mx = y[ofId];
    ll offCnt = getMulMod(ofId);
    ll tCnt = 1;
    ll mxRes = (y[ofId] * offCnt) % MOD;
    ofId++;
    if (!segOF[1]) {
        offCnt = 1;
        ofId = 0;
        mx = 0;
    }
    for (int i = ofId; i < n; i++) {
        offCnt *= x[i];
        offCnt %= MOD;
        tCnt *= x[i];
        ll val = tCnt * y[i];
        if (val > mx) {
            mx = val;
            mxRes = (offCnt * y[i]) % MOD;
        }
    }
    return mxRes;
}

int init(int N, int X[], int Y[]) {
	n = N; pow2 = 1ll << (ll)ceil(log2(n));
    x = vector<ll>(n);
    y = vector<ll>(n);
    for (int i = 0; i < n; i++) {
        x[i] = X[i];
        y[i] = Y[i];
    }
    segMul = vector<ll>(2*pow2, 1);
    segOF = vector<bool>(2*pow2);
    for (int i = 0; i < n; i++) {
        segMul[pow2+i] = X[i];
    }
    for (int i = pow2-1; i > 0; i--) {
        segMul[i] = segMul[2*i] * segMul[2*i+1];
        if (segOF[2*i] || segOF[2*i+1] || segMul[i] >= MOD) {
            segMul[i] %= MOD;
            segOF[i] = true;
        }
    }

    return calc();
}

int updateX(int pos, int val) {
    setX(pos, val);
	return calc();
}

int updateY(int pos, int val) {
    y[pos] = val;
	return calc();
}

Compilation message

horses.cpp: In function 'void setX(int, int)':
horses.cpp:16:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   16 |     pos += pow2;
      |     ~~~~^~~~~~~
horses.cpp: In function 'int getOFId(int, ll)':
horses.cpp:33:28: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   33 |     if (i >= pow2) return i-pow2;
      |                           ~^~~~~
horses.cpp: In function 'int getMulMod(int)':
horses.cpp:39:15: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   39 |     int low = pow2, high = pow2+i;
      |               ^~~~
horses.cpp:39:32: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   39 |     int low = pow2, high = pow2+i;
      |                            ~~~~^~
horses.cpp:46:16: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   46 |     return res % MOD;
      |                ^
horses.cpp: In function 'int calc()':
horses.cpp:52:27: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   52 |     ll offCnt = getMulMod(ofId);
      |                           ^~~~
horses.cpp:61:18: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   61 |     for (int i = ofId; i < n; i++) {
      |                  ^~~~
horses.cpp:71:12: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   71 |     return mxRes;
      |            ^~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:87:22: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   87 |     for (int i = pow2-1; i > 0; i--) {
      |                  ~~~~^~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 424 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 352 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 5 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 5 ms 444 KB Output is correct
32 Correct 3 ms 444 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 21328 KB Output is correct
2 Correct 72 ms 21352 KB Output is correct
3 Correct 43 ms 21412 KB Output is correct
4 Correct 69 ms 21328 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 5 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 5 ms 348 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 156 ms 24660 KB Output is correct
34 Correct 25 ms 24460 KB Output is correct
35 Correct 49 ms 31336 KB Output is correct
36 Correct 50 ms 31292 KB Output is correct
37 Correct 884 ms 22632 KB Output is correct
38 Correct 22 ms 23380 KB Output is correct
39 Execution timed out 1537 ms 22364 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 600 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 1 ms 392 KB Output is correct
29 Correct 5 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 5 ms 452 KB Output is correct
32 Correct 3 ms 348 KB Output is correct
33 Correct 45 ms 25132 KB Output is correct
34 Correct 74 ms 34128 KB Output is correct
35 Correct 44 ms 25164 KB Output is correct
36 Correct 75 ms 29128 KB Output is correct
37 Correct 154 ms 24404 KB Output is correct
38 Correct 24 ms 24408 KB Output is correct
39 Correct 49 ms 31272 KB Output is correct
40 Correct 51 ms 31376 KB Output is correct
41 Correct 954 ms 22872 KB Output is correct
42 Correct 21 ms 23380 KB Output is correct
43 Execution timed out 1541 ms 22424 KB Time limit exceeded
44 Halted 0 ms 0 KB -