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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#380787 | #7838. 往日之影 | Doqe | 0 | 3ms | 3704kb | C++14 | 1.5kb | 2024-04-07 12:11:23 | 2024-04-07 12:11:23 |
answer
#include<bits/stdc++.h>
using namespace std;
int P;
long long qpow(long long a,long long b)
{
long long ans=1;
while(b)
{
if(b&1)ans=ans*a%P;
a=a*a%P,b>>=1;
}
return ans;
}
struct cp
{
long long a,b;
cp(){}cp(int x){a=x,b=0;}cp(int x,int y){a=x,b=y;}
cp operator+(const cp&A)const{return cp((a+A.a)%P,(b+A.b)%P);}
cp operator-()const{return cp((P-a),(P-b));}
cp operator-(const cp&A)const{return cp((a+P-A.a)%P,(b+P-A.b)%P);}
cp operator*(const cp&A)const{return cp((a*A.a+P-b*A.b%P)%P,(b*A.a+a*A.b)%P);}
cp operator*(const long long&x)const{return cp(a*x%P,b*x%P);}
};
cp qpow(cp a,long long b)
{
cp ans=1;
while(b)
{
if(b&1)ans=ans*a;
a=a*a,b>>=1;
}
return ans;
}
int a[4];
int main()
{
int T,n;
cin>>T>>P;
const cp I(0,1),inv2(P+1>>1,0),X(1,0);
while(T--)
{
cin>>n>>a[0]>>a[1]>>a[2]>>a[3];
//no i
int o=a[1]+a[3]&1;
cp ans={(o?0:2),0};
for(int i=0;i<4;++i)if(a[i])
{
ans=ans+qpow(I,i)*qpow((X-I)*inv2,n-1)*a[i];//i1
ans=ans+qpow(I,i)*qpow((X+I)*inv2,n-1)*a[i]*(o^(i&1)?P-1:1);//i-1
ans=ans+qpow(-I,i)*qpow((X+I)*inv2,n-1)*a[i];//-i1
ans=ans+qpow(-I,i)*qpow((X-I)*inv2,n-1)*a[i]*(o^(i&1)?P-1:1);//-i-1
}
for(int i=0;i<4;++i)if(a[i])//ch i
for(int j=0;j<4;++j)if(a[j]>(i==j))//ch -i
{
if(o^(i+j&1))continue;
long long F=1ll*a[i]*(a[j]-(i==j))%P;
ans=ans+qpow(-I,i)*qpow(I,j)*qpow((I+X)*inv2,n-2)*qpow((X-I)*inv2,n-2)*2*F;
}
long long AL=ans.a*qpow(P+1>>1,2*n)%P;
cout<<AL<<endl;
}
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 10
Accepted
time: 1ms
memory: 3704kb
input:
1 998244353 3 1 1 0 1
output:
0
result:
ok single line: '0'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3580kb
input:
1 998244353 7 0 2 1 4
output:
998069185
result:
ok single line: '998069185'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
1 998244353 4 0 1 0 3
output:
0
result:
ok single line: '0'
Test #4:
score: -10
Wrong Answer
time: 1ms
memory: 3628kb
input:
1 998244353 2 1 0 1 0
output:
124780544
result:
wrong answer 1st lines differ - expected: '0', found: '124780544'
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Skipped
Dependency #2:
0%
Subtask #4:
score: 0
Wrong Answer
Test #23:
score: 0
Wrong Answer
time: 3ms
memory: 3628kb
input:
999 999999001 2 2 0 0 0 3 3 0 0 0 4 4 0 0 0 5 5 0 0 0 6 6 0 0 0 7 7 0 0 0 8 8 0 0 0 9 9 0 0 0 10 10 0 0 0 11 11 0 0 0 12 12 0 0 0 13 13 0 0 0 14 14 0 0 0 15 15 0 0 0 16 16 0 0 0 17 17 0 0 0 18 18 0 0 0 19 19 0 0 0 20 20 0 0 0 21 21 0 0 0 22 22 0 0 0 23 23 0 0 0 24 24 0 0 0 25 25 0 0 0 26 26 0 0 0 27...
output:
374999626 874999126 359374641 919920956 691222454 586081873 33512082 496961574 790501684 206445579 708073277 492142887 486007979 21786019 802052117 198521403 854660059 658779344 904643630 538486221 357736277 949763680 94144464 342842045 695164947 276856011 552666277 813428208 572457238 910726512 177...
result:
wrong answer 1st lines differ - expected: '499999501', found: '374999626'
Subtask #5:
score: 0
Skipped
Dependency #1:
0%