Submission #335425

#	Time	Username	Problem	Language	Result	Execution time	Memory
335425		MohammadHijaz	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1089 ms	3184 KiB

shoes

#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
long long count_swaps(std::vector<int> s) {
	int x = s.size();
	int last = 0;
	long long ans = 0;
	for (int i = 0; i < x; i++) {
		if (s[i]*-1 > 0) {
			int j = i;
			while(s[last] != s[j]) {
				swap(s[j] , s[j - 1]);
				j--;
				ans++;
			}
            int tar;
		    for (int j = last + 1; j < x; j++) {
		    	if (s[j] == s[last]*-1) {
		    		tar = j;
		    		break;
		    	}
		    }
		    while(s[last]*-1 != s[last+1]) {
		    	swap(s[tar] , s[tar - 1]);
		    	tar--;
		    	ans++;
		    }
		    last += 2;
		}
		
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:16:17: warning: 'tar' may be used uninitialized in this function [-Wmaybe-uninitialized]
   16 |             int tar;
      |                 ^~~

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