Submission #143771

#	Time	Username	Problem	Language	Result	Execution time	Memory
143771		jwvg0425	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	30 ms	1904 KiB

shoes

#include "shoes.h"

long long count_swaps(std::vector<int> s) {
    long long ans = 0;
    for (int i = 0; i < s.size(); i += 2)
    {
        if (s[i + 1] < 0)
            ans++;
    }

    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:5:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i += 2)
                     ~~^~~~~~~~~~

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