제출 #754900

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
754900		APROHACK	말 (IOI15_horses)	C++14	17 / 100	1561 ms	16192 KiB

horses

#include <bits/stdc++.h>
#include "horses.h"
#define ll long long
#define pb push_back
const int mod = 1e9+7;
using namespace std;
int n;
ll maxV = 0;
ll acum[500005];
vector<ll>x, y;
void updateRet(){
	acum[0] = x[0];
	for(int i = 1 ; i < n ; i ++){
		acum[i] = acum[i-1] * x[i] % mod;
	}
	ll ans = acum[n-1] * y[n-1] % mod;
	ll current = x[n-1]* y[n-1];
	for(int i = n-2 ; i >= 0 ; i --){
		if(current > 1e9){
			maxV = ans;
			return ;
		}
		if(current < y[i]){
			ans = acum[i] * y[i] % mod;
			current = x[i]*y[i] % mod;
		}else{
			current = current * x[i] % mod;
		}
	}
	maxV = ans;
}
int init(int N, int X[], int Y[]) {
	n = N;
	
	for(int i = 0 ; i < N ; i++){
		x.pb(X[i]);
		y.pb(Y[i]);
	}
	updateRet();
	return maxV%mod;
}

int updateX(int pos, int val) {	
	x[pos] = val;
	updateRet();
	return maxV%mod;
}

int updateY(int pos, int val) {
	y[pos] = val;
	updateRet();
	return maxV%mod;
}

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'void updateRet()':
horses.cpp:19:6: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
   19 |   if(current > 1e9){
      |      ^~~~~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:40:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   40 |  return maxV%mod;
      |         ~~~~^~~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:46:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   46 |  return maxV%mod;
      |         ~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:52:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   52 |  return maxV%mod;
      |         ~~~~^~~~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23