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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 |
---|---|---|---|---|---|---|---|---|---|
#582824 | #7900. Gifts from Knowledge | ccsurzw | ML | 6ms | 3640kb | C++23 | 1.5kb | 2024-09-22 17:33:30 | 2024-09-22 17:33:31 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
const int mod = 1e9 + 7;
const int N = 1e6 + 5;
const int inf = 0x3f3f3f3f;
int n, m;
int fa[N];
int find(int x) {
return fa[x] == x ? x : fa[x] = find(fa[x]);
}
ll ksm(ll x, ll y) {
ll sum = 1;
while (y) {
if (y & 1)sum = x * sum % mod;
x = x * x % mod;
y >>= 1;
}
return sum;
}
void solve() {
cin >> n >> m;
for (int i = 1; i <= 2 * n; i++)fa[i] = i;
vector<string> a(n + 1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
a[i] = ' ' + a[i];
}
for (int j = 1; j <= m ; j++) {
vector<pair<int, int>> e;
for (int i = 1; i <= n; i++) {
if (a[i][j] == '1')e.push_back({ i , j });
if (a[i][m + 1 - j] == '1')e.push_back({ i , m + 1 - j });
}
if (e.size() > 2) {
cout << 0 << endl;
return;
}
if (e.size() == 2 && e[0].first != e[1].first) {
int u1 = find(e[1].first), v1 = find(e[0].first);
int u2 = find(e[1].first + n), v2 = find(e[0].first + n);
if (e[0].second == e[1].second) {
fa[u1] = v2;
fa[u2] = v1;
}
else {
fa[u1] = v1;
fa[u2] = v2;
}
}
}
ll cnt = 0;
for (int i = 1; i <= n; i++) {
int u = find(i), v = find(i + n);
if (fa[i] == i)cnt++;
if (fa[i + n] == i + n) cnt++;
if (u == v) {
cout << 0 << endl;
return;
}
}
cnt >>= 1;
cout << ksm(2, cnt) << endl;
}
signed main() {
std::ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int T = 1;
cin >> T;
while (T--)
solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3536kb
input:
3 3 5 01100 10001 00010 2 1 1 1 2 3 001 001
output:
4 0 2
result:
ok 3 number(s): "4 0 2"
Test #2:
score: 0
Accepted
time: 6ms
memory: 3640kb
input:
15613 10 10 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 15 8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1 5 00000 5 9 000000000 000000000 0000...
output:
1024 32768 2 32 32768 128 32 16 16 2 16384 16384 128 128 32768 8192 128 64 16384 2 4 2 4096 16 4096 1024 32768 32768 16384 8 128 2 16 4096 8192 32768 8192 8192 16 16384 16384 256 128 8 256 8 4096 512 2 4 32 32 2 64 512 1024 32768 32768 2 64 16384 16 8192 16 256 16 64 8192 8192 64 1024 2 32768 2 4 51...
result:
ok 15613 numbers
Test #3:
score: -100
Memory Limit Exceeded
input:
15759 9 6 000000 000000 000000 000000 000000 000000 000000 000000 000000 5 15 010000000000000 000000000000000 000000000000000 000100000000000 000100000000000 14 12 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000...
output:
512 16 16384 512 1024 4096 32768 4 2 512 512 512 512 8 2 256 16 4096 512 64 16 4096 512 32 32768 8192 32 2048 128 16 4096 64 32768 256 32 16384 8 512 32 2048 8 16 1024 2048 128 64 32 8 512 8 8192 256 8192 32768 2 8 512 512 256 32 2 2048 8192 8 64 8 2 16384 32768 32768 1024 4096 16384 16384 128 256 4...