제출 #314572

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
314572		baibhav26062008	Arranging Shoes (IOI19_shoes)	C++14	0 / 100	1 ms	256 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll count_swaps(std::vector<int> s) {
	int n = s.size()/2;
	ll ans,found;
    for(ll i=0;i<2*n;i+=2)
    {
        for(ll j=i+1;j<2*n;j++)
        {
            if(abs(s[j])==abs(s[i]))
                found=j;
            if (s[j] > s[i]) ans++;
        }
        for(ll j=found;j>=i+1;j--)
            swap(s[j],s[j-1]);
        ans+= (found - i - 1);
    }
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:20:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |  return ans;
      |         ^~~
shoes.cpp:7:9: warning: 'found' may be used uninitialized in this function [-Wmaybe-uninitialized]
    7 |  ll ans,found;
      |         ^~~~~

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