제출 #68967

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
68967		theknife2001	말 (IOI15_horses)	C++17	0 / 100	1578 ms	16220 KiB

horses

#include "horses.h"
//#include "grader.cpp"
#include <bits/stdc++.h>

using namespace std;
const int N=5e5+55;
long long x[N];
long long y[N];
long long s[N];
int n;
int m=1e9+7;

int solve()
{
	int i=n-1;
    long long ret=0;
	long long temp=1;
	while(i)
    {
        s[i]=x[i]*s[i+1];
        if(s[i]>1000000000)
            break;
        i--;
    }
    i++;
    int bestpos=n-1;
    for(;i<n;i++)
    {
        temp*=x[i];
        if(y[i]*temp>ret)
        {
            ret=y[i]*temp;
            bestpos=i;
        }
    }
    ret=1;
    for(int i=0;i<=bestpos;i++)
    {
        ret*=x[i];
        ret%=m;
    }
    ret*=y[bestpos];
    ret%=m;
    return ret;
}

int init(int N, int X[], int Y[])
{
	n=N;
    for(int i=0;i<N;i++)
    {
        s[i]=1;
        x[i]=X[i];
        y[i]=Y[i];
    }
    s[n]=1;
    s[n+1]=1;
    return solve();
}

int updateX(int pos, int val) {
    x[pos]=val;
    return solve();
}

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

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int solve()':
horses.cpp:37:13: warning: declaration of 'i' shadows a previous local [-Wshadow]
     for(int i=0;i<=bestpos;i++)
             ^
horses.cpp:15:6: note: shadowed declaration is here
  int i=n-1;
      ^
horses.cpp:44:12: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     return ret;
            ^~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:47:33: warning: declaration of 'N' shadows a global declaration [-Wshadow]
 int init(int N, int X[], int Y[])
                                 ^
horses.cpp:6:11: note: shadowed declaration is here
 const int N=5e5+55;
           ^

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