제출 #1177766

#제출 시각아이디문제언어결과실행 시간메모리
1177766alwaus424Arranging Shoes (IOI19_shoes)C++17
10 / 100
1 ms328 KiB
#include <bits/stdc++.h>
using namespace std;

int64_t count_swaps(vector<int> S) {
    int64_t swaps = 0;
    int n = S.size();
    for(int i = 0;i<n*2;i++){
          if(i % 2 == 0 && S[i] > 0 ){
               int nex1 = 0;
               for(int j = i+1;j<2*n;j++){
                    if(S[j] == -1){
                         nex1 = j;
                         break;
                    }
               }
               while(nex1 > i) {
                    swap(S[nex1] , S[nex1-1]);
                    nex1--;
                    swaps++;
               }
          }
          else if(i & 1 && S[i] < 0){
               int nex1 = 0;
               for(int j = i+1;j<2*n;j++){
                    if(S[j] == 1){
                         nex1 = j;
                         break;
                    }
               }
               while(nex1 > i) {
                    swap(S[nex1] , S[nex1-1]);
                    nex1--;
                    swaps++;
               }
          }

    }
    return swaps;
}
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