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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#724718 | #7733. Cool, It’s Yesterday Four Times More | yangtb2024 | WA | 2ms | 11900kb | C++14 | 2.1kb | 2024-11-08 14:41:20 | 2024-11-08 14:41:22 |
Judging History
answer
#include <bits/stdc++.h>
#define rep(i, l, r) for(int i = l; i <= r; i++)
#define per(i, l, r) for(int i = r; i >= l; i--)
using namespace std;
const int N = 1005;
int n, m, a[N][N];
int col[N][N], bel;
bitset<N * 8> s[N][N], c;
int get(int x, int y) {
return (x + n + 1) * 3 * m + y;
}
void dfs(int x, int y) {
if(col[x][y]) {
return;
}
col[x][y] = bel;
if(x != 1 && !a[x - 1][y]) {
dfs(x - 1, y);
}
if(x != n && !a[x + 1][y]) {
dfs(x + 1, y);
}
if(y != 1 && !a[x][y - 1]) {
dfs(x, y - 1);
}
if(y != m && !a[x][y + 1]) {
dfs(x, y + 1);
}
}
int main() {
int T;
cin >> T;
while(T--) {
cin >> n >> m;
rep(i, 1, n) {
rep(j, 1, m) {
char x;
cin >> x;
a[i][j] = (x == 'O');
}
}
rep(i, -n, n * 2) {
rep(j, -m + 1, m * 2) {
c[get(i, j)] = (i >= n + 1 || i <= 0 ? 1 : (j <= m && j >= 1 ? a[i][j] : 1));
}
}
rep(i, 1, n) {
rep(j, 1, m) {
if(!a[i][j]) {
s[i][j] = c;
}
}
}
rep(i, 1, n) {
rep(j, 1, m) {
if(!a[i][j]) {
bel++;
dfs(i, j);
}
}
}
rep(i, 1, n) {
rep(j, 1, m) {
if(!a[i][j]) {
rep(k, 1, n) {
rep(t, 1, m) {
if(col[i][j] == col[k][t]) {
s[i][j] |= (i <= k ?
((j <= t ? (c >> (t - j)) : (c << (j - t))) >> ((k - i) * m * 3)) :
((j <= t ? (c >> (t - j)) : (c << (j - t))) << ((i - k) * m * 3)));
}
}
}
}
}
}
int ans = 0;
rep(i, 1, n) {
rep(j, 1, m) {
if(!a[i][j]) {
int sum = 0;
rep(k, 1, n) {
rep(t, 1, m) {
if(k == i && t == j) {
continue;
}
sum += s[i][j][get(k, t)];
// cout << i << " " << j << " " << k << " " << t << " " << s[i][j][get(k, t)] << '\n';
}
}
// cout << i << " " << j << " " << sum << '\n';
// assert(s[i][j][get(i,j)] == 0);
if(sum == n * m - 1) {
ans++;
}
}
}
}
cout << ans << '\n';
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 9788kb
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: -100
Wrong Answer
time: 2ms
memory: 11900kb
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 0 1 1 2 0 0 1 0 0 0 2 0 0 0 0 0 0 1 0 2 3 0 0 0 0 0 0 1 0 1 0 3 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 0 2 0 1 2 0 0 1 0 1 0 1 0 0 0 0 0 1 1 1 0 0 1 0 0 0 0 0 0 2 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 ...
result:
wrong answer 4th lines differ - expected: '2', found: '0'