제출 #799492

#제출 시각아이디문제언어결과실행 시간메모리
799492QwertyPi비스킷 담기 (IOI20_biscuits)C++14
9 / 100
1045 ms340 KiB
#include "biscuits.h" #include <bits/stdc++.h> using namespace std; const int MAXK = 60; long long count_tastiness(long long x, vector<long long> a) { a.resize(MAXK); vector<long long> pw2(MAXK), s(MAXK); pw2[0] = 1; for(int i = 1; i < MAXK; i++) pw2[i] = pw2[i - 1] * 2; s[0] = a[0]; for(int i = 1; i < MAXK; i++) s[i] = s[i - 1] + a[i] * pw2[i]; for(int i = 0; i < MAXK; i++) s[i] /= x; int ans = 0; for(long long y = 0; y <= 100000; y++){ bool ok = true; for(int k = 0; k < MAXK; k++){ int _y = y & ((1LL << k + 1) - 1); ok &= _y <= s[k]; } ans += ok; } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:16:28: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   16 |    int _y = y & ((1LL << k + 1) - 1);
      |                          ~~^~~
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