QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #214634 | #5661. Multi-Ladders | AnthonyQwO# | WA | 0ms | 3652kb | C++14 | 658b | 2023-10-14 22:08:44 | 2023-10-14 22:08:45 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int MOD=1e9+7;
int qpow( int n, int k ) {
int res=1;
for( ; k ; n=n*n%MOD, k>>=1 ) if( k&1 ) res=res*n%MOD;
return res;
}
signed main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int q;
cin>>q;
for(;q--;) {
int n, k ,y, res, last;
cin>>n>>k>>y;
if(k == 3) last = (y-1)*(y-2);
else last = (y-1)+(y-2)*(y-2);
if( y == 0 || y == 1 ) cout<<0<<'\n';
else cout << y*(last)% MOD*qpow((y-1),(k-3))% MOD*qpow(qpow(((y-1)+(y-2)*(y-2)% MOD)% MOD, n-1), k) % MOD<<'\n';
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3652kb
input:
1 2 3 3
output:
162
result:
ok single line: '162'
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3648kb
input:
20 2 3 3 1 3 3 10 3 0 10 3 2 1 21 2 1 22 0 2000 15000 2000 12000 30000 200000 1000000000 3 3 2 1000000000 3 2 3 100000000 1000000000 1000000000 10 1000000000 3 100000000 2 1000000000 100000000 1 1000000000 10 1 1000000000 100000000 1 1000 100000000 1000000000 1000000000 0 1000000000 1000000000 1 100...
output:
162 6 0 0 2 0 164845369 945582174 52489881 779538007 596768072 967595532 617448707 659457370 429257881 896065397 407795774 0 0 7875496
result:
wrong answer 5th lines differ - expected: '0', found: '2'