QOJ.ac
QOJ
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #844520 | #8428. Partition into Teams | 464zzyx | AC ✓ | 16ms | 19020kb | C++14 | 1.1kb | 2025-01-06 01:59:23 | 2025-01-06 01:59:24 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define deb(x) cerr<<"deb:"<<__LINE__<<" "<<#x<<"="<<x<<"\n"
#define getchar()(p1==p2&&(p2=(p1=buf)+fread(buf,1,1<<21,stdin),p1==p2)?EOF:*p1++)
using namespace std;
char buf[1<<21],*p1=buf,*p2=buf;
inline ll read()
{
ll sum=0,l=1;char c=getchar();
while(!isdigit(c)){if(c=='-')l=-1;c=getchar();}
while(isdigit(c)){sum=(sum<<1)+(sum<<3)+(c^48);c=getchar();}
return sum*l;
}
ll qz1[1001000],qz2[1001000],p;
ll s[110];
ll qp(ll a,ll b)
{
ll c=1;
while(b)
{
if(b&1)c=c*a%p;
a=a*a%p;
b>>=1;
}
return c;
}
ll C(ll a,ll b)
{
return qz1[a]*qz2[b]%p*qz2[a-b]%p;
}
int main()
{
ll a=read(),cnt=0;p=read();
qz1[0]=1;
for(ll i=1;i<p;i++)qz1[i]=qz1[i-1]*i%p;
qz2[p-1]=qp(qz1[p-1],p-2);
for(ll i=p-2;i>=0;i--)qz2[i]=qz2[i+1]*(i+1)%p;
ll nw=a;
while(nw)
{
s[++cnt]=nw%p;
nw/=p;
}
ll ans=1;
for(ll i=1;i<=cnt;i++)
{
ll now=0;
for(ll j=0;j*2<=s[i];j++)
{
now+=C(s[i],j)*C(s[i]-j,j)%p;
if(now>=p)now-=p;
}
ans=ans*now%p;
}
cout<<(qp(3,a)-ans+p)*qp(2,p-2)%p;
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 7784kb
input:
5 5
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 7652kb
input:
5 7
output:
5
result:
ok 1 number(s): "5"
Test #3:
score: 0
Accepted
time: 0ms
memory: 7652kb
input:
789 97
output:
53
result:
ok 1 number(s): "53"
Test #4:
score: 0
Accepted
time: 1ms
memory: 7592kb
input:
98 23
output:
10
result:
ok 1 number(s): "10"
Test #5:
score: 0
Accepted
time: 1ms
memory: 7568kb
input:
398 7
output:
4
result:
ok 1 number(s): "4"
Test #6:
score: 0
Accepted
time: 1ms
memory: 7776kb
input:
272 31
output:
18
result:
ok 1 number(s): "18"
Test #7:
score: 0
Accepted
time: 1ms
memory: 7712kb
input:
920 199
output:
39
result:
ok 1 number(s): "39"
Test #8:
score: 0
Accepted
time: 1ms
memory: 7628kb
input:
390 5167
output:
1236
result:
ok 1 number(s): "1236"
Test #9:
score: 0
Accepted
time: 1ms
memory: 9872kb
input:
445 24337
output:
4546
result:
ok 1 number(s): "4546"
Test #10:
score: 0
Accepted
time: 3ms
memory: 16656kb
input:
28 586501
output:
269032
result:
ok 1 number(s): "269032"
Test #11:
score: 0
Accepted
time: 0ms
memory: 7792kb
input:
304 5
output:
0
result:
ok 1 number(s): "0"
Test #12:
score: 0
Accepted
time: 0ms
memory: 7724kb
input:
7158 41
output:
16
result:
ok 1 number(s): "16"
Test #13:
score: 0
Accepted
time: 1ms
memory: 7772kb
input:
8487 331
output:
148
result:
ok 1 number(s): "148"
Test #14:
score: 0
Accepted
time: 0ms
memory: 7644kb
input:
501 6763
output:
363
result:
ok 1 number(s): "363"
Test #15:
score: 0
Accepted
time: 2ms
memory: 8188kb
input:
3011 61129
output:
49319
result:
ok 1 number(s): "49319"
Test #16:
score: 0
Accepted
time: 7ms
memory: 13160kb
input:
7266 358159
output:
7643
result:
ok 1 number(s): "7643"
Test #17:
score: 0
Accepted
time: 1ms
memory: 7592kb
input:
360860 7
output:
1
result:
ok 1 number(s): "1"
Test #18:
score: 0
Accepted
time: 1ms
memory: 7792kb
input:
154939 19
output:
8
result:
ok 1 number(s): "8"
Test #19:
score: 0
Accepted
time: 1ms
memory: 7728kb
input:
813268 47
output:
40
result:
ok 1 number(s): "40"
Test #20:
score: 0
Accepted
time: 1ms
memory: 7736kb
input:
965601 1531
output:
1147
result:
ok 1 number(s): "1147"
Test #21:
score: 0
Accepted
time: 3ms
memory: 8336kb
input:
689332 78079
output:
17208
result:
ok 1 number(s): "17208"
Test #22:
score: 0
Accepted
time: 2ms
memory: 7956kb
input:
287719 34369
output:
15373
result:
ok 1 number(s): "15373"
Test #23:
score: 0
Accepted
time: 1ms
memory: 7656kb
input:
439237583 7
output:
6
result:
ok 1 number(s): "6"
Test #24:
score: 0
Accepted
time: 1ms
memory: 7712kb
input:
319142531 79
output:
21
result:
ok 1 number(s): "21"
Test #25:
score: 0
Accepted
time: 1ms
memory: 7796kb
input:
592330255 631
output:
530
result:
ok 1 number(s): "530"
Test #26:
score: 0
Accepted
time: 1ms
memory: 7812kb
input:
164278463 4517
output:
3038
result:
ok 1 number(s): "3038"
Test #27:
score: 0
Accepted
time: 2ms
memory: 10328kb
input:
753671285 65371
output:
22369
result:
ok 1 number(s): "22369"
Test #28:
score: 0
Accepted
time: 16ms
memory: 19020kb
input:
289665297 663127
output:
168503
result:
ok 1 number(s): "168503"
Test #29:
score: 0
Accepted
time: 0ms
memory: 7712kb
input:
350585676619 7
output:
5
result:
ok 1 number(s): "5"
Test #30:
score: 0
Accepted
time: 0ms
memory: 7716kb
input:
4283693890775 31
output:
1
result:
ok 1 number(s): "1"
Test #31:
score: 0
Accepted
time: 1ms
memory: 7724kb
input:
1234727503131 151
output:
67
result:
ok 1 number(s): "67"
Test #32:
score: 0
Accepted
time: 1ms
memory: 7780kb
input:
9399186742989 1327
output:
678
result:
ok 1 number(s): "678"
Test #33:
score: 0
Accepted
time: 1ms
memory: 7852kb
input:
1409645481800 8719
output:
1939
result:
ok 1 number(s): "1939"
Test #34:
score: 0
Accepted
time: 6ms
memory: 16072kb
input:
3782178721166 552859
output:
458256
result:
ok 1 number(s): "458256"
Test #35:
score: 0
Accepted
time: 0ms
memory: 7716kb
input:
827235816874722972 5
output:
2
result:
ok 1 number(s): "2"
Test #36:
score: 0
Accepted
time: 0ms
memory: 7648kb
input:
648249960855836992 61
output:
56
result:
ok 1 number(s): "56"
Test #37:
score: 0
Accepted
time: 1ms
memory: 7720kb
input:
467138518199434341 563
output:
202
result:
ok 1 number(s): "202"
Test #38:
score: 0
Accepted
time: 1ms
memory: 7776kb
input:
616207494477524619 653
output:
95
result:
ok 1 number(s): "95"
Test #39:
score: 0
Accepted
time: 2ms
memory: 9896kb
input:
129689263663821851 34403
output:
30422
result:
ok 1 number(s): "30422"
Test #40:
score: 0
Accepted
time: 7ms
memory: 15568kb
input:
605206340470214709 479971
output:
381982
result:
ok 1 number(s): "381982"