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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 |
---|---|---|---|---|---|---|---|---|---|
#348121 | #8339. Rooted Tree | ucup-team191# | AC ✓ | 1337ms | 1628kb | C++23 | 731b | 2024-03-09 17:02:12 | 2024-03-09 17:02:12 |
Judging History
answer
#include <cstdio>
using namespace std;
typedef long long ll;
const int MOD = 1e9 + 9;
inline int add(int A, int B) {
if(A + B >= MOD)
return A + B - MOD;
return A + B;
}
inline int sub(int A, int B) {
if(A - B < 0)
return A - B + MOD;
return A - B;
}
inline int mul(int A, int B) {
return (ll)A * B % MOD;
}
inline int pot(int A, int B) {
int ret = 1;
for(;B;B>>=1) {
if(B & 1) ret = mul(ret, A);
A = mul(A, A);
}
return ret;
}
int main(){
int M, K; scanf("%d%d", &M, &K);
int ans = 0;
for(int i = 1;i <= K;i++) {
int sad = (M - 1) * i + 1;
int cv = (K - i) * M;
ans = add(ans, mul(mul(M, cv), pot(sad, MOD - 2)));
}
printf("%d\n", add(ans, M * K));
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 1608kb
input:
6 2
output:
18
result:
ok 1 number(s): "18"
Test #2:
score: 0
Accepted
time: 0ms
memory: 1604kb
input:
2 6
output:
600000038
result:
ok 1 number(s): "600000038"
Test #3:
score: 0
Accepted
time: 82ms
memory: 1512kb
input:
83 613210
output:
424200026
result:
ok 1 number(s): "424200026"
Test #4:
score: 0
Accepted
time: 897ms
memory: 1604kb
input:
48 6713156
output:
198541581
result:
ok 1 number(s): "198541581"
Test #5:
score: 0
Accepted
time: 0ms
memory: 1512kb
input:
1 111
output:
6216
result:
ok 1 number(s): "6216"
Test #6:
score: 0
Accepted
time: 976ms
memory: 1592kb
input:
28 7304152
output:
457266679
result:
ok 1 number(s): "457266679"
Test #7:
score: 0
Accepted
time: 549ms
memory: 1512kb
input:
38 4101162
output:
232117382
result:
ok 1 number(s): "232117382"
Test #8:
score: 0
Accepted
time: 1321ms
memory: 1608kb
input:
51 9921154
output:
340670552
result:
ok 1 number(s): "340670552"
Test #9:
score: 0
Accepted
time: 240ms
memory: 1512kb
input:
79 1801157
output:
620550406
result:
ok 1 number(s): "620550406"
Test #10:
score: 0
Accepted
time: 725ms
memory: 1508kb
input:
22 5417157
output:
457449071
result:
ok 1 number(s): "457449071"
Test #11:
score: 0
Accepted
time: 429ms
memory: 1564kb
input:
25 3210162
output:
36368303
result:
ok 1 number(s): "36368303"
Test #12:
score: 0
Accepted
time: 390ms
memory: 1584kb
input:
67 2919160
output:
935195555
result:
ok 1 number(s): "935195555"
Test #13:
score: 0
Accepted
time: 1155ms
memory: 1572kb
input:
77 8613163
output:
482832472
result:
ok 1 number(s): "482832472"
Test #14:
score: 0
Accepted
time: 1336ms
memory: 1604kb
input:
90 10000000
output:
275581651
result:
ok 1 number(s): "275581651"
Test #15:
score: 0
Accepted
time: 1337ms
memory: 1628kb
input:
99 9999999
output:
126087169
result:
ok 1 number(s): "126087169"
Test #16:
score: 0
Accepted
time: 1333ms
memory: 1508kb
input:
100 10000000
output:
451590067
result:
ok 1 number(s): "451590067"
Extra Test:
score: 0
Extra Test Passed