QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#588559 | #7733. Cool, It’s Yesterday Four Times More | argtarg | WA | 1ms | 3640kb | C++20 | 2.0kb | 2024-09-25 13:12:52 | 2024-09-25 13:12:53 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
void solve();
signed main()
{
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int T; cin >> T;
while (T--)solve();
return 0;
}
int oo = 0;
void solve() {
int n, m;
cin >> n >> m;
vector<string>s(n);
vector<bool>v(n * m);
auto get = [&](int x, int y)->int {
return x * m + y;
};
for (int i = 0; i < n; i++) {
cin >> s[i];
for (int j = 0; j < m; j++) {
if (s[i][j] == '.')v[get(i, j)] = 0;
else v[get(i, j)] = 1;
}
}
//return;
vector<int>vis(n * m);
vector<vector<int>>flag(n * m, vector<int>(n * m));
vector<int>dx = { 0,0,-1,1 };
vector<int>dy = { -1,1,0,0 };
int ans = 0;
vector<int>add(n * m + 1);
int cnt = 0;
auto fail = [&](int x, int y)->bool {
if (x < 0 || x >= n || y < 0 || y >= m || v[get(x, y)] == 1 || vis[get(x, y)] == 1)return 1;
return 0;
};
auto dfs = [&](auto dfs, int u, int t) ->int{
if (flag[u][t])return flag[u][t];
int i = u / m, j = u % m, x = t / m, y = t % m;
int ok = -1;
for (int k = 0; k < 4; k++) {
int ni = dx[k] + i, nj = dy[k] + j, nx = dx[k] + x, ny = dy[k] + y;
int nu = get(ni, nj), nt = get(nx, ny);
if (fail(ni, nj))continue;
if (fail(nx, ny)) {
ok = 1;
continue;
}
vis[nu] = 1;
add[++cnt] = nu;
//add[++cnt] = nt;
ok = max(dfs(dfs, nu, nt), ok);
}
flag[u][t] = ok;
return ok;
};
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
int u = get(i, j);
if (v[u] == 1)continue;
int ok = 1;
for (int x = 0; x < n; x++) {
for (int y = 0; y < m; y++) {
int t = get(x, y);
if (v[t] == 1||u==t)continue;
vis[u] = 1;
add[++cnt] = u;
flag[u][t]=dfs(dfs, u, t);
ok = min(ok, flag[u][t]);
for (int i = 1; i <= cnt; i++) {
vis[add[i]] = 0;
}
cnt = 0;
}
}
ans += (ok==1);
//if (ok == 1)cout << i << ' ' << j << endl;
}
}
cout << ans << endl;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3556kb
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: 1ms
memory: 3640kb
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 2 0 0 1 0 5 7 4 4 0 5 4 2 0 1 6 3 4 2 0 0 4 3 3 1 3 1 0 5 4 2 3 4 3 0 6 2 2 2 0 4 6 3 3 2 2 2 5 2 1 0 3 3 3 3 2 2 0 6 5 3 5 5 3 2 3 2 1 2 1 3 0 0 2 4 1 3 6 6 1 4 2 2 2 4 4 2 1 0 1 7 3 4 11 0 3 2 1 0 0 3 3 1 3 3 7 3 0 3 4 2 5 1 3 3 3 0 2 9 2 2 4 0 3 4 3 2 1 2 3 0 4 0 13 3 3 2 4 0 7 3 3 1 ...
result:
wrong answer 7th lines differ - expected: '3', found: '2'