QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #347366 | #8339. Rooted Tree | ucup-team052# | AC ✓ | 1060ms | 3916kb | C++23 | 615b | 2024-03-09 13:25:37 | 2024-03-09 13:25:37 |
Judging History
answer
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=(a);i<=(b);++i)
#define per(i,a,b) for(int i=(a);i>=(b);--i)
#define SZ(x) ((int)(x).size())
using namespace std;
const int P=1e9+9;
int ad(int x,int y){return x+y<P?x+y:x+y-P;}
int su(int x,int y){return x-y<0?x-y+P:x-y;}
int mu(int x,int y){return 1ULL*x*y%P;}
int po(int x,int y){
int z=1;
while(y){
if(y&1){
z=mu(z,x);
}
if((y>>=1))x=mu(x,x);
}
return z;
}
int M,K;
signed main(){
cin>>M>>K;
int s=mu(M,K);
rep(i,1,K-1){
s=ad(s,mu(mu(M,mu(K-i,M)),po((M-1)*i+1,P-2)));
}
printf("%d\n",s);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3916kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3744kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 66ms
memory: 3740kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 712ms
memory: 3864kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 1ms
memory: 3860kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 770ms
memory: 3736kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 435ms
memory: 3732kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1049ms
memory: 3796kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 191ms
memory: 3788kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 574ms
memory: 3728kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 341ms
memory: 3760kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 309ms
memory: 3804kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 914ms
memory: 3848kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1060ms
memory: 3812kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1056ms
memory: 3740kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1057ms
memory: 3844kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed