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제출 #44524

#제출 시각아이디문제언어결과실행 시간메모리
44524MatheusLealVCoins (IOI17_coins)C++17
100 / 100
13 ms1640 KiB
#include <bits/stdc++.h> using namespace std; vector<int> coin_flips(vector<int> a, int x) { int X = 0; for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i; vector<int> F; F.push_back(X ^ x); return F; } int find_coin(vector<int> a) { int X = 0; for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i; return X; }

컴파일 시 표준 에러 (stderr) 메시지

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:8:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;
                 ~~^~~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < a.size(); i++) if(a[i]) X ^= i;
                 ~~^~~~~~~~~~
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