Submission #282680

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
282680	2020-08-24 17:54:41	medmdg	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1085 ms	3192 KiB

shoes

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#include <bits/stdc++.h>
using namespace std;
long long count_swaps(std::vector<int> S){
    int ans=0;
    while(S.size()){
        int count=0;
        if(S[0]>0)
            count ++;
        for(int i=1;i<S.size();i++){
            if(S[i]==-1*S[0]){
                count += i-1;
                S.erase(S.begin()+i);
                S.erase(S.begin());
                break;
            }
        }
        ans+=count;
    }
    return ans;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |         for(int i=1;i<S.size();i++){
      |                     ~^~~~~~~~~

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