QOJ.ac
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 |
---|---|---|---|---|---|---|---|---|---|
#713912 | #8339. Rooted Tree | shunhualin# | AC ✓ | 1116ms | 3728kb | C++20 | 789b | 2024-11-05 20:52:54 | 2024-11-05 20:52:55 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
#define endl "\n"
const int mod = 1e9 + 9;
const int N = 1e5 + 50;
using namespace std;
int quickpow(int n, int m){
int res = 1;
while(m){
if(m & 1){
res = res * n % mod;
}
n = n * n % mod;
m = m >> 1;
}
return res;
}
void slove(){
int m, k; cin >> m >> k;
int s1 = m, s2 = m, s3 = m;
for(int i = 2; i <= k; i++){
int p = quickpow(s1, mod - 2);
int ss1 = s1 + m - 1;
int ss2 = s2 + (m - 1) * s2 % mod * p % mod + m;
int ss3 = s3 + m + m * s2 % mod * p % mod;
s1 = ss1 % mod;
s2 = ss2 % mod;
s3 = ss3 % mod;
}
cout << s3 << endl;
}
signed main(){
ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
int T = 1;
//cin >> T;
while(T--){
slove();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3728kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3660kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 69ms
memory: 3588kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 750ms
memory: 3648kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 812ms
memory: 3632kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 458ms
memory: 3644kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1109ms
memory: 3708kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 202ms
memory: 3628kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 605ms
memory: 3708kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 359ms
memory: 3580kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 322ms
memory: 3592kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 962ms
memory: 3592kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1116ms
memory: 3644kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1116ms
memory: 3580kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1112ms
memory: 3624kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed