제출 #798501

#제출 시각아이디문제언어결과실행 시간메모리
798501hgmhcCoins (IOI17_coins)C++17
0 / 100
6 ms1516 KiB
#include "coins.h" #include <bits/stdc++.h> using namespace std; using ii = pair<int,int>; using ll = long long; using vi = vector<int>; #define rep(i,a,b) for (auto i = (a); i <= (b); ++i) #define per(i,a,b) for (auto i = (b); i >= (a); --i) #define all(x) begin(x), end(x) #define siz(x) int((x).size()) #define Mup(x,y) x = max(x,y) #define mup(x,y) x = min(x,y) #define fi first #define se second #define dbg(...) fprintf(stderr,__VA_ARGS__) vi coin_flips(vi b, int c) { int sum=0; rep(i,0,63) sum ^= b[i]*i; rep(i,0,63) if (sum^i == c) return {i}; assert(0); } int find_coin(vi b) { int sum=0; rep(i,0,63) sum ^= b[i]*i; return sum; }

컴파일 시 표준 에러 (stderr) 메시지

coins.cpp: In function 'vi coin_flips(vi, int)':
coins.cpp:17:27: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
   17 |     rep(i,0,63) if (sum^i == c) return {i};
      |                         ~~^~~~
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