原题链接:蓝桥杯算法提高VIP-开灯游戏
解题思路:
只要你,够暴力,我就让你 * * *
注意事项:
参考代码:
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
using namespace std;
bool light[9];
vector<string> ans;
int a[][9] = {
{0,0,0,0,0,0,0,0,1},
{0,0,0,0,0,0,0,1,1},
{0,0,0,0,0,0,1,1,1},
{0,0,0,0,0,1,1,1,1},
{0,0,0,0,1,1,1,1,1},
{0,0,0,1,1,1,1,1,1},
{0,0,1,1,1,1,1,1,1},
{0,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1},
};
bool check()
{
int count = 0;
for (int j = 0; j < 9; j++)
if (light[j])
count += 1;
if (count == 4)
return true;
else
return false;
}
void solve()
{
for (int i = 0; i < 9; i++)
{
do
{
for (int j = 0; j < 9; j++)
{
if (a[i][j] == 1)
{
if (j == 0)
{
light[1] = !light[1];
light[3] = !light[3];
}
if (j == 1)
{
light[0] = !light[0];
light[2] = !light[2];
light[4] = !light[4];
}
if (j == 2)
{
light[1] = !light[1];
light[5] = !light[5];
}
if (j == 3)
{
light[0] = !light[0];
light[4] = !light[4];
light[6] = !light[6];
}
if (j == 4)
{
light[1] = !light[1];
light[3] = !light[3];
light[5] = !light[5];
light[7] = !light[7];
}
if (j == 5)
{
light[2] = !light[2];
light[4] = !light[4];
light[8] = !light[8];
}
if (j == 6)
{
light[3] = !light[3];
light[7] = !light[7];
}
if (j == 7)
{
light[4] = !light[4];
light[6] = !light[6];
light[8] = !light[8];
}
if (j == 8)
{
light[5] = !light[5];
light[7] = !light[7];
}
}
}
if (check())
{
// for (int j = 0; j < 9; j++)
// cout << a[i][j];
// cout << endl;
string s;
for (int j = 0; j < 9; j++)
s += '0' + a[i][j];
ans.push_back(s);
}
for (int k = 0; k < 9; k++)
light[k] = false;
} while (next_permutation(a[i], a[i] + 9));
}
sort(ans.begin(), ans.end());
for (vector<string>::iterator it = ans.begin(); it < ans.end(); it++)
cout << *it << endl;
}
int main()
{
solve();
return 0;
}0.0分
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