Submission #68948

#	Time	Username	Problem	Language	Result	Execution time	Memory
68948		theknife2001	Horses (IOI15_horses)	C++17	17 / 100	18 ms	8732 KiB

horses

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

using namespace std;
const int N=1e3+55;
long long x[N];
long long y[N];
int m=1e9+7;



int init(int N, int X[], int Y[])
{
    long long s=1;
    long long ret=0;
    for(int i=0;i<N;i++)
    {
        x[i]=X[i];
        y[i]=Y[i];
    }
	for(int i=0;i<N;i++)
    {
        s*=x[i];
        s%=m;
        ret=max((s*y[i])%m,ret);
    }
    return (ret%m);
}

int updateX(int pos, int val) {
    long long s=1;
    long long ret=0;
    x[pos]=val;
	for(int i=0;i<N;i++)
    {
        s*=x[i];
        s%=m;
        ret=max((s*y[i])%m,ret);
    }
    return (ret%m);
}

int updateY(int pos, int val) {
    long long s=1;
    long long ret=0;
    y[pos]=val;
	for(int i=0;i<N;i++)
    {
        s*=x[i];
        s%=m;
        ret=max((s*y[i])%m,ret);
    }
    return (ret%m);
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:13:33: 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=1e3+55;
           ^
horses.cpp:28:16: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     return (ret%m);
            ~~~~^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:41:16: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     return (ret%m);
            ~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:54:16: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     return (ret%m);
            ~~~~^~~

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