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/*
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*/
#include<bits/stdc++.h>
#include "horses.h"
using namespace std;
typedef long long ll ;
const ll oo = 1e13 ;
const double PI = acos(-1) ;
const ll M = 1e9 + 7 ;
ll x[500010] , y[500010] , n;
ll f = 1 , mp[31] ;
int init(int N, int X[], int Y[]){
n = N;
for(int i = 0 ; i < N ; ++i)x[i] = X[i] , y[i] = Y[i] , f = (x[i] * f) % M;
ll x1 = 1 , pl = 0 , ans = 1;
for(int i = max(0ll,n - 31) ; i < N ; ++i){
x1 *= x[i];
if(y[pl] < x1 * y[i])
x1 = 1 ,pl = i ;
if(i != max(0ll , n - 31))
mp[i] = (mp[i - 1] * x[i]) % M;
else mp[i] = x[i];
}
ans = f / (mp[N - 1] / mp[pl]);
return (ans * y[pl]) % M;
}
int updateX(int pos, int val){
x[pos] = val;
ll x1 = 1 , pl = 0 , ans = 1;
for(int i = max(0ll,n - 31) ; i < n ; ++i){
x1 *= x[i];
if(y[pl] < x1 * y[i])
x1 = 1 ,pl = i ;
}
ans = f / (mp[n - 1] / mp[pl]);
return (ans * y[pl]) % M;
}
int updateY(int pos, int val){
y[pos] = val;
ll x1 = 1 , pl = 0 , ans = 1;
for(int i = max(0ll,n - 31) ; i < n; ++i){
x1 *= x[i];
if(y[pl] < x1 * y[i])
x1 = 1 ,pl = i ;
}
ans = f / (mp[n - 1] / mp[pl]);
return (ans * y[pl]) % M;
}
컴파일 시 표준 에러 (stderr) 메시지
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:36:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
for(int i = max(0ll,n - 31) ; i < N ; ++i){
~~~^~~~~~~~~~~~
horses.cpp:45:23: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
return (ans * y[pl]) % M;
~~~~~~~~~~~~~~^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:51:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
for(int i = max(0ll,n - 31) ; i < n ; ++i){
~~~^~~~~~~~~~~~
horses.cpp:57:23: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
return (ans * y[pl]) % M;
~~~~~~~~~~~~~~^~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:63:17: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
for(int i = max(0ll,n - 31) ; i < n; ++i){
~~~^~~~~~~~~~~~
horses.cpp:69:23: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
return (ans * y[pl]) % M;
~~~~~~~~~~~~~~^~~
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