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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#270352 | #7733. Cool, It’s Yesterday Four Times More | March_April# | WA | 2ms | 3884kb | C++20 | 3.5kb | 2023-11-30 19:38:23 | 2023-11-30 19:38:23 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
struct Node
{
int ans[4];
};
void solve()
{
int n, m;
cin >> n >> m;
vector<string> g(n);
for(int i = 0;i < n; i ++) cin >> g[i];
int dx[] = {0, 0, 1, -1}, dy[] = {1, -1, 0, 0};
vector<vector<int>> block(n, vector<int> (m));//每个格子属于哪个连通块
int cnt = 0;//连通块的数量
vector<int> idx(1010);
auto bfs = [&] (int x, int y, int id)
{
queue<pair<int, int>> q;
q.push({x, y});
block[x][y] = id;
while(q.size())
{
auto [ix, iy] = q.front();
q.pop();
idx[id] ++;
for(int i = 0;i < 4; i ++)
{
int a = dx[i] + ix, b = dy[i] + iy;
if(a < 0 || a >= n || b < 0 || b >= m)
continue;
if(block[a][b] || g[a][b] == 'O') continue;
q.push({a, b});
block[a][b] = id;
}
}
};
for(int i = 0;i < n; i ++)
for(int j = 0;j < m; j ++)
if(!block[i][j] && g[i][j] != 'O')
bfs(i, j, ++ cnt);
vector<pair<int, int>> p(cnt + 1);
auto bfs1 = [&] (int x, int y, int d)
{
queue<pair<int, int>> q;
q.push({x, y});
int val = 0;
while(q.size())
{
auto [ix, iy] = q.front();
q.pop();
val ++;
int a = dx[d] + ix, b = dy[d] + iy;
// if(ix == 1 && iy == 4 && d == 3)
// clog << a << ' ' << b << '\n';
if(a < 0 || a >= n || b < 0 || b >= m)
continue;
if(g[a][b] == 'O') continue;
// if(ix == 1 && iy == 4 && d == 3)
// clog << a << ' ' << b << '\n';
q.push({a, b});
}
return val;
};
vector<vector<Node>> f(n, vector<Node> (m));
for(int i = 0;i < n; i ++)
for(int j = 0;j < m; j ++)
{
if(g[i][j] == 'O') continue;
for(int u = 0;u < 4; u ++)
f[i][j].ans[u] = bfs1(i, j, u);
}
int ans = 0;
vector<bool> st(cnt + 1);
for(int i = 0;i < n; i ++)
{
for(int j = 0;j < m; j ++)
{
if(g[i][j] == 'O') continue;
bool ok = true;
for(int u = 0;u < n; u ++)
for(int k = 0;k < m; k ++)
{
if(block[i][j] == block[u][k])
continue;
int xx = 0;
for(int l = 0;l < 4; l ++)
{
if(f[i][j].ans[l] <= f[u][k].ans[l])
xx ++;
}
if(xx == 4)
{
ok = false;
break;
}
}
if(ok)
st[block[i][j]] = true;
//clog << ok << ' ' << block[i][j] << '\n';
}
}
for(int i = 1;i <= cnt; i ++)
if(st[i])
ans += idx[i];
cout << ans << '\n';
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
int tt;
cin >> tt;
while(tt --)
{
solve();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3884kb
input:
4 2 5 .OO.. O..O. 1 3 O.O 1 3 .O. 2 3 OOO OOO
output:
3 1 0 0
result:
ok 4 lines
Test #2:
score: 0
Accepted
time: 1ms
memory: 3652kb
input:
200 2 4 OOO. OO.. 2 3 OOO .O. 3 3 O.O OOO OO. 4 1 . . O O 1 2 .O 1 1 . 2 5 .OO.. .O.O. 2 1 O O 1 1 O 1 3 .OO 5 1 O O . O . 5 2 O. .. O. .O .. 5 3 ... ... .OO ..O OOO 3 5 ..O.O .O.O. .OO.O 5 2 .O OO O. O. .. 2 1 O O 3 5 .O.OO O...O ..OO. 1 5 ..... 5 1 O . O . . 5 3 OOO OO. .OO OO. O.O 2 1 O . 5 2 O. ...
output:
3 0 0 2 1 1 3 0 0 1 0 7 9 4 4 0 6 5 2 0 1 6 4 5 2 0 0 5 3 3 1 4 1 0 7 5 2 3 7 3 0 6 2 2 2 0 4 6 6 3 3 2 3 5 2 1 0 3 3 4 4 2 2 0 7 6 4 8 5 3 2 5 2 1 2 1 4 0 0 2 5 1 4 6 6 1 6 2 2 3 4 5 2 1 0 1 9 3 4 11 0 3 2 1 0 0 4 3 1 4 3 8 3 0 3 6 2 5 1 3 3 4 0 2 11 2 2 4 0 4 4 6 2 1 2 3 0 5 0 16 4 3 2 6 0 8 3 3 1...
result:
ok 200 lines
Test #3:
score: -100
Wrong Answer
time: 2ms
memory: 3608kb
input:
50 10 9 OOOO.O... O...O.OOO .....O... ..OO..O.O ...O..O.O ..OOO..O. ..OOO...O .OO.O..OO .O.O.OO.. .O..O.O.O 10 10 .O.OOO.OO. ...OOOOOOO ...O.O..O. .O.O..O... .O.O.OO..O ..OO.O..OO O....O..OO OO...OOOOO OO.OO.O..O .O.O.OOOOO 10 8 O..OOO.O O.OOOO.. O..OO.OO OO..OO.. .OOO..O. .OO.OO.O OOO..OO. ..O..OO....
output:
31 40 13 25 40 37 20 24 20 26 25 29 21 29 21 23 32 31 25 34 25 31 18 19 41 28 20 45 20 29 18 21 19 28 35 13 20 10 32 29 28 23 16 23 19 18 28 17 35 19
result:
wrong answer 7th lines differ - expected: '27', found: '20'