Submission #431465

#	Time	Username	Problem	Language	Result	Execution time	Memory
431465		Hazem	Comparing Plants (IOI20_plants)	C++14	0 / 100	1 ms	284 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>

using namespace std;

int k;
vector<int>a,pr;

void init(int K, std::vector<int> r) {
	
	k = k;a = pr = r;
	for(int i=1;i<a.size();i++)
		pr[i] += pr[i-1];

	return;
}

bool check(int x,int y){

	if(y>x)
		return (pr[y-1]-(x?pr[x-1]:0))==y-x+1;
	else 
		return (pr.back()-pr[x-1]+(y?pr[y-1]:0))==pr.size()-x+y;
}

int compare_plants(int x, int y) {
	
	if(check(x,y))
		return -1;
	if(check(y,x))
		return 1;
	return 0;
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:12:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i=1;i<a.size();i++)
      |              ~^~~~~~~~~
plants.cpp: In function 'bool check(int, int)':
plants.cpp:23:43: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   return (pr.back()-pr[x-1]+(y?pr[y-1]:0))==pr.size()-x+y;
      |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25