제출 #1047251

#제출 시각아이디문제언어결과실행 시간메모리
1047251Onur_IlgazArranging Shoes (IOI19_shoes)C++17
0 / 100
0 ms348 KiB
#include "shoes.h" #include <bits/stdc++.h> using namespace std; long long count_swaps(std::vector<int> s) { map <int, stack<int> > mp; int ans = 0; for(int i = 0; i < s.size(); i++) { if(!mp[-s[i]].empty()) { ans += (i - mp[-s[i]].top()); mp[-s[i]].pop(); } else { mp[s[i]].push(i); } } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i = 0; i < s.size(); i++) {
      |                 ~~^~~~~~~~~~
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