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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#791645#8339. Rooted TreeXUAN_#AC ✓1195ms3876kbC++14664b2024-11-28 20:03:382024-11-28 20:03:43

Judging History

你现在查看的是最新测评结果

  • [2024-11-28 20:03:43]
  • 评测
  • 测评结果:AC
  • 用时:1195ms
  • 内存:3876kb
  • [2024-11-28 20:03:38]
  • 提交

answer

#include <cstdio>
#include <iostream>
#include <cstring>
#include <algorithm>
#include <vector>
#define ll long long
#define PB push_back
using namespace std;

const int mod = 1e9 + 9;
int Pow(int x, int y) {
    int res = 1;
    for(; y; y>>=1, x = 1ll * x * x % mod)
        if(y&1) res = 1ll * res * x % mod;
    return res;
}

int main() {
    int n, m;
    cin  >> m >> n;
    int res = m, sum = 0;
    for(int i=1; i<n; ++i) {
        sum = (sum + 1ll * m * Pow((1 + 1ll * i * (m-1)) % mod, mod-2))% mod;
        // cout << sum << endl;
        res = (res + (sum + 1) * 1ll * m) % mod;
    }
    printf("%d", res);
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3848kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 74ms
memory: 3740kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 803ms
memory: 3756kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3876kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 873ms
memory: 3844kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 491ms
memory: 3824kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1186ms
memory: 3744kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 216ms
memory: 3764kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 648ms
memory: 3700kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 384ms
memory: 3700kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 350ms
memory: 3752kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 1030ms
memory: 3832kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1192ms
memory: 3844kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1192ms
memory: 3760kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1195ms
memory: 3696kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed