Submission #436460

#	Time	Username	Problem	Language	Result	Execution time	Memory
436460		rGamer	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1 ms	288 KiB

shoes

#include <bits/stdc++.h>
#define ll long long
#define vi vector<int>

using namespace std;
 
ll count_swaps(vi s) {
    int n = s.size() / 2, ans = 0;
    if(n == 1)
        return (s[0] > 0);
        
    bool ok = true;
    for(int i = 1; i < 2 * n; ++i)
        if(abs(s[i]) != abs(s[0]))
            ok = false;
    if(ok)
        for(int i = 0; i < n; ++i)
            if(s[2 * i] > 0)
                ans++;
    return ans;
}

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