Submission #335463

#	Time	Username	Problem	Language	Result	Execution time	Memory
335463		MohammadHijaz	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1093 ms	1900 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 += 2) {
            int tar;
		    for (int j = i + 1; j < x; j++) {
		    	if (s[j] == s[i]*-1) {
		    		tar = j;
		    		break;
		    	}
		    }
            while(i + 1 != tar) {
                swap(s[tar] , s[tar - 1]);
                tar--;
                ans++;
            }
            if (s[i] > s[i + 1]) {
                swap(s[i + 1] , s[i]);
                ans++;
            }		
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:6: warning: unused variable 'last' [-Wunused-variable]
    6 |  int last = 0;
      |      ^~~~
shoes.cpp:9:17: warning: 'tar' may be used uninitialized in this function [-Wmaybe-uninitialized]
    9 |             int tar;
      |                 ^~~

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