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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 |
---|---|---|---|---|---|---|---|---|---|
#759441 | #9553. The Hermit | AzusidNya | AC ✓ | 82ms | 38488kb | C++17 | 1.8kb | 2024-11-18 08:28:49 | 2024-11-18 08:28:49 |
Judging History
你现在查看的是测评时间为 2024-11-18 08:28:49 的历史记录
- [2024-11-18 19:43:48]
- hack成功,自动添加数据
- (/hack/1196)
- [2024-11-18 08:28:49]
- 提交
answer
#include<bits/stdc++.h>
#define int long long
#define eb emplace_back
#define mp make_pair
#define DEBUG
using namespace std;
using pii = pair<int, int>;
using piii = pair<int, pii>;
using piiii = pair<pii, pii>;
using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned int;
const int P = 998244353;const i64 inf = 0x3f3f3f3f3f3f3f3f;
namespace CombineMath{
// const int P = ...;
vector<int> jc;
vector<int> inv;
int ksm(int u, int v){
int ret = 1;
while(v){
if(v & 1) ret = 1ll * ret * u % P;
u = 1ll * u * u % P, v >>= 1;
}
return ret;
}
int prework(int n){
jc.assign(n + 5, 0);
inv.assign(n + 5, 0);
jc[0] = 1, inv[0] = 1;
for(int i = 1; i <= n; i ++)
jc[i] = 1ll * jc[i - 1] * i % P;
inv[n] = ksm(jc[n], P - 2);
for(int i = n - 1; i >= 1; i --)
inv[i] = 1ll * inv[i + 1] * (i + 1) % P;
return 0;
}
int binom(int u, int v){
if(u < 0 || v < 0) return 0;
if(u < v) return 0;
return 1ll * (1ll * jc[u] * inv[v] % P) * inv[u - v] % P;
}
int F(int u, int v){
return binom(u + v - 1, v - 1);
}
}using namespace CombineMath;
namespace azus{
int n, m;
int f[100005][25];
int main(){
cin >> m >> n;
for(int i = 1; i <= m; i ++){
f[i][1] ++;
for(int j = i + i; j <= m; j += i){
for(int k = 1; k <= 24; k ++){
(f[j][k] += f[i][k - 1]) %= P;
}
}
}
int ans = 0;
for(int i = 1; i <= m; i ++){
for(int j = 1; j <= 24; j ++){
int len = n - j;
int x = m / i - 1;
(ans += f[i][j] * binom(x, len) % P) %= P;
}
}
cout << ((n * binom(m, n) % P) - ans + P) % P << "\n";
return 0;
}
}
signed main(){
#ifndef DEBUG
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
#endif
int T = 1;
CombineMath::prework(1000005);
// cin >> T;
while(T --)
azus::main();
return 0;
}
这程序好像有点Bug,我给组数据试试?
詳細信息
Test #1:
score: 100
Accepted
time: 8ms
memory: 18712kb
input:
4 3
output:
7
result:
ok 1 number(s): "7"
Test #2:
score: 0
Accepted
time: 8ms
memory: 18616kb
input:
11 4
output:
1187
result:
ok 1 number(s): "1187"
Test #3:
score: 0
Accepted
time: 72ms
memory: 38484kb
input:
100000 99999
output:
17356471
result:
ok 1 number(s): "17356471"
Test #4:
score: 0
Accepted
time: 14ms
memory: 20980kb
input:
11451 1919
output:
845616153
result:
ok 1 number(s): "845616153"
Test #5:
score: 0
Accepted
time: 76ms
memory: 38300kb
input:
99998 12345
output:
936396560
result:
ok 1 number(s): "936396560"
Test #6:
score: 0
Accepted
time: 72ms
memory: 38384kb
input:
100000 1
output:
0
result:
ok 1 number(s): "0"
Test #7:
score: 0
Accepted
time: 63ms
memory: 38344kb
input:
100000 15
output:
190067060
result:
ok 1 number(s): "190067060"
Test #8:
score: 0
Accepted
time: 8ms
memory: 18724kb
input:
10 3
output:
299
result:
ok 1 number(s): "299"
Test #9:
score: 0
Accepted
time: 5ms
memory: 18624kb
input:
10 4
output:
743
result:
ok 1 number(s): "743"
Test #10:
score: 0
Accepted
time: 11ms
memory: 18756kb
input:
10 5
output:
1129
result:
ok 1 number(s): "1129"
Test #11:
score: 0
Accepted
time: 7ms
memory: 18656kb
input:
15 6
output:
28006
result:
ok 1 number(s): "28006"
Test #12:
score: 0
Accepted
time: 11ms
memory: 18752kb
input:
15 7
output:
42035
result:
ok 1 number(s): "42035"
Test #13:
score: 0
Accepted
time: 7ms
memory: 18712kb
input:
123 45
output:
214851327
result:
ok 1 number(s): "214851327"
Test #14:
score: 0
Accepted
time: 8ms
memory: 19028kb
input:
998 244
output:
964050559
result:
ok 1 number(s): "964050559"
Test #15:
score: 0
Accepted
time: 7ms
memory: 19308kb
input:
1919 810
output:
379720338
result:
ok 1 number(s): "379720338"
Test #16:
score: 0
Accepted
time: 7ms
memory: 18916kb
input:
1048 576
output:
216543264
result:
ok 1 number(s): "216543264"
Test #17:
score: 0
Accepted
time: 7ms
memory: 19016kb
input:
999 777
output:
635548531
result:
ok 1 number(s): "635548531"
Test #18:
score: 0
Accepted
time: 77ms
memory: 38440kb
input:
99999 77777
output:
448144614
result:
ok 1 number(s): "448144614"
Test #19:
score: 0
Accepted
time: 25ms
memory: 25524kb
input:
34527 6545
output:
748108997
result:
ok 1 number(s): "748108997"
Test #20:
score: 0
Accepted
time: 13ms
memory: 21384kb
input:
12345 12
output:
777496209
result:
ok 1 number(s): "777496209"
Test #21:
score: 0
Accepted
time: 8ms
memory: 18584kb
input:
1 1
output:
0
result:
ok 1 number(s): "0"
Test #22:
score: 0
Accepted
time: 74ms
memory: 38436kb
input:
100000 10101
output:
855985819
result:
ok 1 number(s): "855985819"
Test #23:
score: 0
Accepted
time: 69ms
memory: 38452kb
input:
100000 91919
output:
92446940
result:
ok 1 number(s): "92446940"
Test #24:
score: 0
Accepted
time: 82ms
memory: 38412kb
input:
100000 77979
output:
106899398
result:
ok 1 number(s): "106899398"
Test #25:
score: 0
Accepted
time: 13ms
memory: 20812kb
input:
10000 11
output:
326411649
result:
ok 1 number(s): "326411649"
Test #26:
score: 0
Accepted
time: 68ms
memory: 38320kb
input:
100000 2
output:
15322970
result:
ok 1 number(s): "15322970"
Test #27:
score: 0
Accepted
time: 73ms
memory: 38348kb
input:
100000 3
output:
93355797
result:
ok 1 number(s): "93355797"
Test #28:
score: 0
Accepted
time: 72ms
memory: 38344kb
input:
100000 99998
output:
331850772
result:
ok 1 number(s): "331850772"
Test #29:
score: 0
Accepted
time: 68ms
memory: 38316kb
input:
100000 99996
output:
885066226
result:
ok 1 number(s): "885066226"
Test #30:
score: 0
Accepted
time: 11ms
memory: 21236kb
input:
13115 2964
output:
0
result:
ok 1 number(s): "0"
Test #31:
score: 0
Accepted
time: 72ms
memory: 38424kb
input:
100000 17
output:
425792977
result:
ok 1 number(s): "425792977"
Test #32:
score: 0
Accepted
time: 70ms
memory: 38416kb
input:
99991 16
output:
667323936
result:
ok 1 number(s): "667323936"
Test #33:
score: 0
Accepted
time: 78ms
memory: 38380kb
input:
99991 17
output:
627396741
result:
ok 1 number(s): "627396741"
Test #34:
score: 0
Accepted
time: 72ms
memory: 38412kb
input:
99991 18
output:
874158501
result:
ok 1 number(s): "874158501"
Test #35:
score: 0
Accepted
time: 67ms
memory: 38416kb
input:
100000 100000
output:
99999
result:
ok 1 number(s): "99999"
Test #36:
score: 0
Accepted
time: 63ms
memory: 37228kb
input:
94229 94229
output:
94228
result:
ok 1 number(s): "94228"
Test #37:
score: 0
Accepted
time: 63ms
memory: 37220kb
input:
94229 94223
output:
476599876
result:
ok 1 number(s): "476599876"
Test #38:
score: 0
Accepted
time: 9ms
memory: 18692kb
input:
2 1
output:
0
result:
ok 1 number(s): "0"
Test #39:
score: 0
Accepted
time: 4ms
memory: 18660kb
input:
2 2
output:
0
result:
ok 1 number(s): "0"
Test #40:
score: 0
Accepted
time: 7ms
memory: 18632kb
input:
3 1
output:
0
result:
ok 1 number(s): "0"
Test #41:
score: 0
Accepted
time: 11ms
memory: 18732kb
input:
3 2
output:
2
result:
ok 1 number(s): "2"
Test #42:
score: 0
Accepted
time: 11ms
memory: 18656kb
input:
3 3
output:
2
result:
ok 1 number(s): "2"
Test #43:
score: 0
Accepted
time: 7ms
memory: 18828kb
input:
9 2
output:
44
result:
ok 1 number(s): "44"
Test #44:
score: 0
Accepted
time: 7ms
memory: 18632kb
input:
9 3
output:
206
result:
ok 1 number(s): "206"
Test #45:
score: 0
Accepted
time: 7ms
memory: 18728kb
input:
9 4
output:
441
result:
ok 1 number(s): "441"
Test #46:
score: 0
Accepted
time: 11ms
memory: 18636kb
input:
9 7
output:
224
result:
ok 1 number(s): "224"
Test #47:
score: 0
Accepted
time: 52ms
memory: 32732kb
input:
70839 22229
output:
0
result:
ok 1 number(s): "0"
Test #48:
score: 0
Accepted
time: 45ms
memory: 31640kb
input:
65536 17
output:
698801006
result:
ok 1 number(s): "698801006"
Test #49:
score: 0
Accepted
time: 48ms
memory: 31664kb
input:
65535 17
output:
433312902
result:
ok 1 number(s): "433312902"
Test #50:
score: 0
Accepted
time: 71ms
memory: 38384kb
input:
99856 317
output:
932131332
result:
ok 1 number(s): "932131332"
Test #51:
score: 0
Accepted
time: 76ms
memory: 38364kb
input:
99856 318
output:
398997854
result:
ok 1 number(s): "398997854"
Test #52:
score: 0
Accepted
time: 73ms
memory: 38452kb
input:
99856 2
output:
984791559
result:
ok 1 number(s): "984791559"
Test #53:
score: 0
Accepted
time: 71ms
memory: 38488kb
input:
100000 50000
output:
309108799
result:
ok 1 number(s): "309108799"
Extra Test:
score: 0
Extra Test Passed