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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
#462645#8339. Rooted TreecastcAC ✓1126ms159908kbC++20782b2024-07-03 23:02:422024-07-03 23:02:42

Judging History

你现在查看的是最新测评结果

  • [2024-07-03 23:02:42]
  • 评测
  • 测评结果:AC
  • 用时:1126ms
  • 内存:159908kb
  • [2024-07-03 23:02:42]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N=5e7+10,M=1e9+9;
int ny[N],dp[N],zt[N],maxx,f[N];
int power(int a, int b, int mod = M) {
    int res = 1;
    for (; b; b /= 2, a *= a, a %= M) {
        if (b % 2) {
            res *= a;
            res %= M;
        }
    }
    return res;
}
signed main(){
    int m,k;
    cin>>m>>k;
    f[0]=1; 
    for(int i=1;i<=k;i++){
        f[i]=f[i-1]-1+m;
    }
    dp[0]=0;
    ny[1]=1;
    for(int i=1;i<=k;i++){
        int zqx=power(f[i],M-2);
        dp[i] = (dp[i - 1] * (f[i - 1] - 1 + m) % M + m) * zqx;
        dp[i]%=M;
    }
    int ans1=dp[k]*f[k]%M;
    for(int i=1;i<k;i++){
        ans1+=dp[i];
        ans1%=M;
    }
    cout<<ans1<<endl;
    return 0;
} 

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3532kb

input:

6 2

output:

18

result:

ok 1 number(s): "18"

Test #2:

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

input:

2 6

output:

600000038

result:

ok 1 number(s): "600000038"

Test #3:

score: 0
Accepted
time: 64ms
memory: 13148kb

input:

83 613210

output:

424200026

result:

ok 1 number(s): "424200026"

Test #4:

score: 0
Accepted
time: 758ms
memory: 108544kb

input:

48 6713156

output:

198541581

result:

ok 1 number(s): "198541581"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3628kb

input:

1 111

output:

6216

result:

ok 1 number(s): "6216"

Test #6:

score: 0
Accepted
time: 817ms
memory: 117780kb

input:

28 7304152

output:

457266679

result:

ok 1 number(s): "457266679"

Test #7:

score: 0
Accepted
time: 452ms
memory: 67644kb

input:

38 4101162

output:

232117382

result:

ok 1 number(s): "232117382"

Test #8:

score: 0
Accepted
time: 1100ms
memory: 158676kb

input:

51 9921154

output:

340670552

result:

ok 1 number(s): "340670552"

Test #9:

score: 0
Accepted
time: 206ms
memory: 31624kb

input:

79 1801157

output:

620550406

result:

ok 1 number(s): "620550406"

Test #10:

score: 0
Accepted
time: 605ms
memory: 88284kb

input:

22 5417157

output:

457449071

result:

ok 1 number(s): "457449071"

Test #11:

score: 0
Accepted
time: 356ms
memory: 53716kb

input:

25 3210162

output:

36368303

result:

ok 1 number(s): "36368303"

Test #12:

score: 0
Accepted
time: 327ms
memory: 49184kb

input:

67 2919160

output:

935195555

result:

ok 1 number(s): "935195555"

Test #13:

score: 0
Accepted
time: 942ms
memory: 138048kb

input:

77 8613163

output:

482832472

result:

ok 1 number(s): "482832472"

Test #14:

score: 0
Accepted
time: 1126ms
memory: 159852kb

input:

90 10000000

output:

275581651

result:

ok 1 number(s): "275581651"

Test #15:

score: 0
Accepted
time: 1122ms
memory: 159908kb

input:

99 9999999

output:

126087169

result:

ok 1 number(s): "126087169"

Test #16:

score: 0
Accepted
time: 1093ms
memory: 159712kb

input:

100 10000000

output:

451590067

result:

ok 1 number(s): "451590067"

Extra Test:

score: 0
Extra Test Passed