제출 #918538

#제출 시각아이디문제언어결과실행 시간메모리
918538fuad27Coins (IOI17_coins)C++17
0 / 100
7 ms1792 KiB
#include "coins.h" std::vector<int> coin_flips(std::vector<int> b, int c) { int x = c; for(int i = 0;i<b.size();i++) x^=(b[i]?i:0); b[x]^=1; return b; } int find_coin(std::vector<int> b) { int x =0; for(int i = 0;i<b.size();i++) x^=(b[i]?i:0); return x; }

컴파일 시 표준 에러 (stderr) 메시지

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:5:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 |   for(int i = 0;i<b.size();i++)
      |                 ~^~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for(int i = 0;i<b.size();i++)
      |                   ~^~~~~~~~~
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