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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#654800 | #7900. Gifts from Knowledge | LurkInShadow | WA | 10ms | 3860kb | C++17 | 3.2kb | 2024-10-18 22:16:08 | 2024-10-18 22:16:08 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
#define ls u << 1
#define rs u << 1 | 1
#define ff first
#define ss second
#define pb push_back
#define p_q priority_queue
#define INF 0x7FFFFFFF
#define INFF 9223372036854775807
#define den(a) cout << #a << " = " << a << "\n";
#define deg(a) cout << #a << " = " << a << " ";
using namespace std;
using TIII = tuple<int,int,int>;
using PII = pair<int, int>;
using ULL = unsigned long long;
using ld = long double;
const int MOD = 1e9 + 7;
const double eps = 1e-9;
const int N = 5e6 + 10;
int fa[2 * N],n,m;
vector<string> g;
int find(int x)
{
if(fa[x] == x) return fa[x];
return fa[x] = find(fa[x]);
}
void unionn(int u,int v)
{
int x = find(u),y = find(v);
if(x == y) return;
fa[y] = x;
}
int qpow(int base,int power)
{
int res = 1;
while(power)
{
if(power & 1) res = res * base % MOD;
power >>= 1;
base = base * base % MOD;
}
return res;
}
void solve()
{
cin >> n >> m;
g.clear();
for(int i = 0;i < 2 * n;i ++) fa[i] = i;
for(int i = 0;i < n;i ++)
{
string s;
cin >> s;
g.pb(s);
}
int sc = 0;
for(int i = 0;i < m;i ++)
{
int c = 0;
for(int j = 0;j < n;j ++)
{
if(g[j][i] == '1') c ++;
}
if(c > 2)
{
cout << 0 << '\n';
return;
}
sc += c;
if(sc > m)
{
cout << 0 << '\n';
return;
}
}
for(int i = 0,j = m - 1;i < j;i ++,j --)
{
vector<int> L,R;
for(int k = 0;k < n;k ++)
{
if(g[k][i] == '1') L.pb(k);
if(g[k][j] == '1') R.pb(k);
}
if(L.size() + R.size() > 2)
{
cout << 0 << '\n';
return;
}
if(L.size() == 2)
{
unionn(L[0],L[1] + n);
unionn(L[1],L[0] + n);
}
if(R.size() == 2)
{
unionn(R[0],R[1] + n);
unionn(R[1],R[0] + n);
}
for(auto L: L) for(auto R: R) unionn(L, R), unionn(L + n, R + n);
}
int cnt = 0;
for(int i = 0;i < n;i ++)
{
if(find(i) == find(i + n))
{
cout << 0 << '\n';
return;
}
}
for(int i = 0;i < 2 * n;i ++)
{
if(fa[i] == i) cnt ++;
}
cout << qpow(2,cnt / 2) << '\n';
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr), cout.tie(nullptr);
int T = 1;
cin >> T;
while (T--)
{
solve();
}
return 0;
}
/*
/\7 ∠_/
/ │ / /
│ Z _,< / /`ヽ
│ ヽ / 〉
Y ` / /
イ● 、 ● ⊂⊃〈 /
() へ | \〈
>ー 、_ ィ │ //
/ へ / ノ<| \\
ヽ_ノ (_/ │//
7 |/
>―r ̄ ̄`ー―_
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3572kb
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: 10ms
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
Wrong Answer
time: 10ms
memory: 3860kb
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...
result:
wrong answer 163rd numbers differ - expected: '0', found: '256'