Submission #1011278

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011278		Mardonbekhazratov	Horses (IOI15_horses)	C++17	17 / 100	1551 ms	26304 KiB

horses

#include "horses.h"
#include<algorithm>
#include<vector>
#include<iostream>
const __int128_t INFLL=1e18;
const int INF=1e9;
const int MOD=1e9+7;

using namespace std;

int n;
vector<int>x,y;


int get(){
	vector<__int128_t>pref(n+1),suff(n+2);
	pref[0]=suff[n+1]=1;
	for(int i=0;i<n;i++){
		pref[i+1]=pref[i]*x[i]%MOD;
		suff[n-i]=max(suff[n-i+1]*x[n-i-1],suff[n+1]*x[n-i-1]*y[n-i-1]);
		if(suff[n-i]>=INFLL){
			long long ans=suff[n-i]%MOD;
			for(int j=i-1;j>=0;j--) ans=ans*x[j]%MOD;
			return ans;
		}
	}
	return suff[1]%MOD;
}

int init(int N, int X[], int Y[]) {
	n=N;
	x.resize(n);
	y.resize(n);
	for(int i=0;i<n;i++) x[i]=X[i],y[i]=Y[i];
	return get();
}


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

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

Compilation message (stderr)

horses.cpp: In function 'int get()':
horses.cpp:22:27: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<__int128>, __int128>::value_type' {aka '__int128'} to 'long long int' may change value [-Wconversion]
   22 |    long long ans=suff[n-i]%MOD;
horses.cpp:24:11: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   24 |    return ans;
      |           ^~~
horses.cpp:27:16: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<__int128>, __int128>::value_type' {aka '__int128'} to 'int' may change value [-Wconversion]
   27 |  return suff[1]%MOD;

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