Submission #1087671

#	Time	Username	Problem	Language	Result	Execution time	Memory
1087671		MahmytM	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1 ms	352 KiB

shoes

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
void afterdot(int n){
	cout<<setprecision(n)<<fixed;
}
ll count_swaps(vector<int> s){
	if(s.size()==2){
		if(s[0]<=0){
			return 0;
		}
		return 1;
	}
	int ans=0;
	for(int i=0;i<s.size();i++){
		if(s[i]>0){
			int z=-1*s[i],num=1e9,in;
			for(int j=0;j<s.size();j++){
				if(s[j]==z){
					if(num>abs(i-j)){
						num=abs(i-j);
						in=j;
					}
				}
			}
			if(in>i){
				for(int j=i;j<in;j++){
					swap(s[j],s[j+1]);
					ans++;
				}
			}else{
				for(int j=in;j<i-1;j++){
					swap(s[j],s[j+1]);
					ans++;
				}
			}
		}
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:20:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for(int i=0;i<s.size();i++){
      |              ~^~~~~~~~~
shoes.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |    for(int j=0;j<s.size();j++){
      |                ~^~~~~~~~~
shoes.cpp:22:26: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
   22 |    int z=-1*s[i],num=1e9,in;
      |                          ^~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15