QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#468589 | #8339. Rooted Tree | real_sigma_team# | AC ✓ | 190ms | 3720kb | C++20 | 1.8kb | 2024-07-08 21:43:11 | 2024-07-08 21:43:11 |
Judging History
answer
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,bmi2,fma,popcnt")
#ifdef lisie_bimbi
#define debug(x) cout << #x << " : " << x << endl;
#else
#define endl '\n'
#endif
//#define int long long
#define inf 1000000000000000000
#define double long double
typedef long long ll;
int mod = 1000000009;
int add(int a, int b) {
return a + b >= mod ? a + b - mod : a + b;
}
int sub(int a, int b) {
return a >= b ? a - b : a + mod - b;
}
int mul(int a, int b) {
return (long long)a * b % mod;
}
int binpow(int a, int b){
if(b == 0){
return 1;
}
int ans = binpow(a, b / 2);
ans = mul(ans, ans);
if(b % 2 == 1){
ans = mul(ans, a);
}
return ans;
}
int del(int a, int b){
return mul(a, binpow(b, mod - 2));
}
signed main() {
#ifdef lisie_bimbi
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#else
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#endif
int m, k;
cin >> m >> k;
int d = 0;
int cnt = 1;
int ans;
int a = 0;
int b = 1;
int e = 0;
int f = 1;
int a1, b1;
for(int i = 0; i < k - 1; i++){
a1 = m;
b1 = add(cnt, sub(m, 1));
//cout << a1 << " " << b1 << endl;
a = add(mul(a, b1), mul(a1, b));
b = mul(b, b1);
e = add(mul(e, b), mul(a, f));
f = mul(f, b);
cnt = add(cnt, m - 1);
//cout << a << " " << b << endl;
//cout << e << " " << f << endl;
//cout << endl;
}
ans = add(mul(m, k), mul(m, del(e, f)));
cout << ans;
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3584kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3588kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 9ms
memory: 3668kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 124ms
memory: 3720kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 139ms
memory: 3644kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 78ms
memory: 3700kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 185ms
memory: 3644kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 31ms
memory: 3632kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 103ms
memory: 3588kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 61ms
memory: 3628kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 56ms
memory: 3664kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 160ms
memory: 3648kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 190ms
memory: 3640kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 190ms
memory: 3596kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 190ms
memory: 3632kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed