제출 #134210

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
134210		Runtime_error_	말 (IOI15_horses)	C++14	17 / 100	1535 ms	13048 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>
#define ll long long
#define ld long double
using namespace std;
const ll inf = 5e5+9,mod = 1e9+7;
ll n,dp[inf],x[inf],y[inf];

int calc(){

    ld lcur=log(1.0),lret = 0.0,ltmp=0.0;

	ll cur = 1,ret = 0,tmp=0;
	for(int i=1;i<=n;i++){
        cur = (cur*x[i])%mod;
        lcur += log(1.0*x[i]);
        tmp = (cur*y[i])%mod;
        ltmp = lcur+log(1.0*y[i]);
        if(ltmp>lret)
            lret = ltmp,ret = tmp;
        ret = max(ret , (cur*y[i])%mod );
	}
	return ret;

}

int init(int N, int X[], int Y[]) {
    n = N;
    for(int i=1;i<=N;i++)
        x[i] = X[i-1] , y[i] = Y[i-1];

    return calc();
}

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

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

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int calc()':
horses.cpp:16:28: warning: conversion to 'double' from 'long long int' may alter its value [-Wconversion]
         lcur += log(1.0*x[i]);
                         ~~~^
horses.cpp:18:32: warning: conversion to 'double' from 'long long int' may alter its value [-Wconversion]
         ltmp = lcur+log(1.0*y[i]);
                             ~~~^
horses.cpp:23:9: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return ret;
         ^~~

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