Submission #416593

#	Time	Username	Problem	Language	Result	Execution time	Memory
416593		victoriad	Horses (IOI15_horses)	C++14	0 / 100	19 ms	16168 KiB

horses

#include "horses.h"
#include "vector"
#include "cmath"
#include "algorithm"
#include "utility"
using namespace std;

using namespace std;
vector<int>lista1;
vector<int>lista2;
vector<int>lista3;
int m;
int init(int N, int X[], int Y[]) {
	lista1.resize(N);
	lista2.resize(N);
	for(int i=0;i<N;i++)lista2[i]=Y[i];
	for(int i=0;i<N;i++)lista3[i]=X[i];
	int a=0;
	int y=0;
	int mod=1e9+7;
	int j=1;
	int r2=1;
	for(int i=0;i<N;i++){
		r2*=X[i];
		r2%=(mod);
		lista1[i]=r2;
		j=max(j,r2*Y[i]);
	}
	j%=mod;
	m=j;
	return j;
}

int updateX(int pos, int val) {
	int mod=1e9+7;
	int a=lista3[pos];
	lista3[pos]=val;
	for(int i=pos;i<lista3.size();i++){
		lista1[i]/=a;
		lista1[i]*=val;
		if(lista2[i]*lista1[i]>m){
			m=lista2[i]*lista1[i];
			m%=mod;
		}
	}
	return m;
}
 
int updateY(int pos, int val) {
	int mod=1e9+7;
	if(lista1[pos]*val>m){
		m=lista1[pos]*val%mod;
	}
	return m;
}

Compilation message (stderr)

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:18:6: warning: unused variable 'a' [-Wunused-variable]
   18 |  int a=0;
      |      ^
horses.cpp:19:6: warning: unused variable 'y' [-Wunused-variable]
   19 |  int y=0;
      |      ^
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:38:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  for(int i=pos;i<lista3.size();i++){
      |                ~^~~~~~~~~~~~~~

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