Submission #620666

#	Time	Username	Problem	Language	Result	Execution time	Memory
620666		Hazem	Horses (IOI15_horses)	C++14	17 / 100	29 ms	24160 KiB

horses

#include <bits/stdc++.h>
#define LL long long

using namespace std;

const int M = 5e5+10;
const int MOD = 1e9+7;

LL add(LL a,LL b){
	return (a+b)%MOD;
}

LL mult(LL a,LL b){
	return (a*b)%MOD;
}

LL a[M],b[M],n;

LL calc(){

	LL ans = 0,cur = 1;
	for(int i=1;i<=n;i++){
		assert(cur<=mult(cur,a[i]));
		cur = mult(cur,a[i]);
		ans = max(ans,mult(cur,b[i]));
	}

	return ans;
}

int init(int N, int X[], int Y[]) {
	
	n = N;
	a[0] = 1;
	for(int i=1;i<=n;i++)
		a[i] = X[i-1],b[i] = Y[i-1];

	return calc();
}

int updateX(int pos, int val) {	
	
	a[pos+1] = val;

	return calc();
}

int updateY(int pos, int val) {
	
	b[pos+1] = val;

	return calc();
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:38:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   38 |  return calc();
      |         ~~~~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:45:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   45 |  return calc();
      |         ~~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:52:13: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   52 |  return calc();
      |         ~~~~^~

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