QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#714613 | #8339. Rooted Tree | Andeviking | AC ✓ | 1180ms | 3700kb | C++20 | 1.4kb | 2024-11-06 01:01:31 | 2024-11-06 01:01:32 |
Judging History
answer
#pragma GCC optimize(2)
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef __int128_t int128;
typedef pair<int, int> pii;
#define iofast ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define lowbit(x) (x & (-x))
#define inv(x) qpow(x, mod - 2)
#define debug(x) cout << (#x) << " = " << x << endl
#define range(x) (x).begin(), (x).end()
const int iINF = 0x3f3f3f3f;
const ll llINF = 0x3f3f3f3f3f3f3f3f;
const ll mod = 1000000009;
/*---------------------------------------*/
inline int add(int a, int b, const int mod = mod)
{
return (a += b) >= mod ? a - mod : a;
}
inline int sub(int a, int b, const int mod = mod)
{
return (a -= b) < 0 ? a + mod : a;
}
inline int mul(int a, int b, const int mod = mod)
{
return 1ll * a * b % mod;
}
int qpow(int a, int b)
{
int ans = 1;
for (; b; b >>= 1) {
if (b & 1)
ans = mul(ans, a);
a = mul(a, a);
}
return ans;
}
void solve()
{
int m, k;
cin >> m >> k;
int f = 0;
int tag = mul(m, m);
int ans = 0;
for (int i = 1; i <= k; ++i) {
ans = add(ans, f);
ans = add(ans, m);
f = add(f, mul(tag, qpow(add(1, mul(i, (m - 1))), mod - 2)));
}
cout << ans << '\n';
}
/*---------------------------------------*/
int main()
{
iofast;
int t = 1;
// cin >> t;
while (t--)
solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3632kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 73ms
memory: 3616kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 788ms
memory: 3636kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 862ms
memory: 3632kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 485ms
memory: 3632kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1166ms
memory: 3620kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 213ms
memory: 3632kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 634ms
memory: 3624kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 379ms
memory: 3548kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 344ms
memory: 3636kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 1017ms
memory: 3552kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1178ms
memory: 3544kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1174ms
memory: 3568kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1180ms
memory: 3544kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed