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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#371473#8339. Rooted TreeSatsuki#AC ✓1091ms3680kbC++17829b2024-03-30 13:01:382024-03-30 13:01:38

Judging History

你现在查看的是最新测评结果

  • [2024-03-30 13:01:38]
  • 评测
  • 测评结果:AC
  • 用时:1091ms
  • 内存:3680kb
  • [2024-03-30 13:01:38]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

#define int long long 
#define endl '\n'
const int N = 100010, mod = 1e9 + 9;
int a[N];


int qs(int a, int b)
{
    int res = 1;
    while(b)
    {
        if(b & 1)res = res * a % mod;
        b >>= 1;
        a = a * a % mod;
    }
    return res;
}


void solve()
{
    int m,k;cin >> m >> k;
    int t = 0;
    int now = 1, tmp = 1;
    int res = 0;
    int las = 0;
    for(int i = 0;i < k ;i++)
    {
        int las = qs((m - 1) * (i)%mod + 1, mod - 2);
        res += (t * las + 1);
        t = ((m  - 1) * (i + 1) + 1) % mod * las %mod * t % mod + m;
        res %= mod;
    }
    res = (res + mod) % mod;
    cout << res * m % mod << endl;

}


signed main()
{
    ios::sync_with_stdio(false);cin.tie(0);
    
    solve();
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3560kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3616kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 68ms
memory: 3620kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 731ms
memory: 3544kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 1ms
memory: 3568kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 797ms
memory: 3672kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 448ms
memory: 3564kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1082ms
memory: 3600kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 193ms
memory: 3680kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 591ms
memory: 3604kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 350ms
memory: 3604kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 319ms
memory: 3652kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 938ms
memory: 3596kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1085ms
memory: 3608kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1091ms
memory: 3580kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1090ms
memory: 3556kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed