제출 #797220

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
797220	2023-07-29 08:05:55	finn__	L-triominoes (CEOI21_ltriominoes)	C++17	28 / 100	71 ms	596 KiB

ltrominoes

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#include <bits/stdc++.h>
using namespace std;
constexpr size_t W = 6, K = 250;
struct bmatrix
{
    bitset<1 << W> mat[1 << W];
    bmatrix transpose() const
    {
        bmatrix res;
        for (size_t i = 0; i < 1U << W; ++i)
            for (size_t j = 0; j < 1U << W; ++j)
                res.mat[i][j] = mat[j][i];
        return res;
    }
    bmatrix operator*(bmatrix const &y) const
    {
        bmatrix x = y.transpose();
        bmatrix res;
        for (size_t i = 0; i < 1U << W; ++i)
            for (size_t j = 0; j < 1U << W; ++j)
                res.mat[i][j] = (mat[i] & x.mat[j]).any();
        return res;
    }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

ltrominoes.cpp: In function 'int main()':
ltrominoes.cpp:109:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  109 |     for (size_t i = 0; i < 1 << w; ++i)
      |                        ~~^~~~~~~~
ltrominoes.cpp:159:30: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  159 |         for (size_t i = 0; i < 1 << w; ++i)
      |                            ~~^~~~~~~~

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