Submission #251417

#	Time	Username	Problem	Language	Result	Execution time	Memory
251417		ryansee	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	29 ms	3192 KiB

shoes

#include "shoes.h"

long long count_swaps(std::vector<int> s) {
    int n = s.size() / 2;
    long long ans=0;
    for(int i=n-1;i>=1;--i) ans += i;
    return ans;
}

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