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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#468589#8339. Rooted Treereal_sigma_team#AC ✓190ms3720kbC++201.8kb2024-07-08 21:43:112024-07-08 21:43:11

Judging History

你现在查看的是最新测评结果

  • [2024-07-08 21:43:11]
  • 评测
  • 测评结果:AC
  • 用时:190ms
  • 内存:3720kb
  • [2024-07-08 21:43:11]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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