Submission #203573

#	Time	Username	Problem	Language	Result	Execution time	Memory
203573		mohammad	Horses (IOI15_horses)	C++14	17 / 100	1592 ms	12024 KiB

horses

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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 , pl = 0 , ans = 1;


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];
	ll x1 = 1 ;
	for(int i = 1 ; i < N ; ++i){
		x1 *= x[i];
		if(y[pl] < x1 * y[i])
			x1 = 1 ,pl = i ;
	}
	for(int i = 0 ; i <= pl ; ++i) ans = (ans * x[i]) % M;
	return (ans * y[pl]) % M;
}

int updateX(int pos, int val){
	int pr = x[pos];
	x[pos] = val;
	if(pos <= pl){
		return ((ans / pr) * val) % M;		
	}else{
		ll x1 = 1 ;
		for(int i = pl + 1 ; i < n ; ++i){
			x1 *= x[i];
			if(y[pl] < x1 * y[i])
				x1 = 1 ,pl = i ;
		}
		for(int i = 0 ; i <= pl ; ++i) ans = (ans * x[i]) % M;
		return (ans * y[pl]) % M;
	}
}

int updateY(int pos, int val){
	y[pos] = val;
	ll x1 = 1 ;
	for(int i = 1 ; i < n; ++i){
		x1 *= x[i];
		if(y[pl] < x1 * y[i])
			x1 = 1 ,pl = i ;
	}
	for(int i = 0 ; i <= pl ; ++i) ans = (ans * x[i]) % M;
	return (ans * y[pl]) % M;
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:42:23: 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:46:16: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  int pr = x[pos];
           ~~~~~^
horses.cpp:49:29: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
   return ((ans / pr) * val) % M;  
          ~~~~~~~~~~~~~~~~~~~^~~
horses.cpp:52:18: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
   for(int i = pl + 1 ; i < n ; ++i){
               ~~~^~~
horses.cpp:58:24: 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:71:23: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return (ans * y[pl]) % M;
         ~~~~~~~~~~~~~~^~~

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