제출 #174623

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
174623		mat_v	말 (IOI15_horses)	C++14	17 / 100	1560 ms	12152 KiB

horses

#include <bits/stdc++.h>
#include "horses.h"
#define mod 1000000007
#define maxn 500005
using namespace std;
typedef long long ll;
ll add(ll x, ll y){
    return (x + y)%mod;
}
ll mul(ll x, ll y){
    return (x * y)%mod;
}
ll power(ll x, ll y){
    if(y == 0)return 1;
    ll pola = power(x, y / 2);
    pola = mul(pola, pola);
    if(y%2 == 1)pola = mul(pola, x);
    return pola;
}

int n;
ll x[maxn];
ll y[maxn];


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];
    }
    ll res = 0;
    ll p = 1;
    for(int i=1; i<=n; i++){
        p = mul(p, x[i]);
        res = max(res, mul(p, y[i]));
    }
	return res;
}

int updateX(int pos, int val) {
    x[pos + 10] = val;
    ll res = 0;
    ll p = 1;
    for(int i=1; i<=n; i++){
        p = mul(p, x[i]);
        res = max(res, mul(p, y[i]));
    }
	return res;
}

int updateY(int pos, int val) {
	y[pos + 10] = val;
    ll res = 0;
    ll p = 1;
    for(int i=1; i<=n; i++){
        p = mul(p, x[i]);
        res = max(res, mul(p, y[i]));
    }
	return res;
}

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:38:9: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return res;
         ^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:49:9: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return res;
         ^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:60:9: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return res;
         ^~~

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