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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#692874 | #9248. An Easy Math Problem | WaO_o# | WA | 638ms | 5984kb | C++20 | 2.4kb | 2024-10-31 15:09:18 | 2024-10-31 15:09:26 |
Judging History
This is the latest submission verdict.
- [2024-10-31 22:36:43]
- hack成功,自动添加数据
- (/hack/1098)
- [2024-10-31 22:13:58]
- hack成功,自动添加数据
- (/hack/1096)
- [2024-10-31 22:00:43]
- hack成功,自动添加数据
- (/hack/1095)
- [2024-10-31 15:09:18]
- Submitted
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define deg( x ) cout<<""#x"="<<x<<endl
#define endl '\n'
#define pll pair<int,int>
#define se second
#define fr first
#define double long double
const int N=1e5+10;
int gcd( int a , int b ){
if( b==0 ) return a;
return gcd( b , a%b );
}
int idx=0 , idn=0;
int fac[ N ] , num[ N ] , fan[ N ];
void dec( int x ){
idx=0;
//fac[ ++idx ]=1 , num[ idx ]=1;
for( int i=2; i*i<=x; i++ ){
if( x%i==0 ) fac[ ++idx ]=i , num[ idx ]=0;
while( x%i==0 ){
num[ idx ]+=1;
x/=i;
}
}
if( x!=1 ) fac[ ++idx ]=x , num[ idx ]=1;
idn=1; fan[ 1 ]=1;
for( int i=1; i<=idx; i++ ){
int en=idn , te=1;
int now=fac[ i ];
for( int k=1; k<=num[ i ]; k++ ){
te*=now;
for( int j=1; j<=en; j++ ) fan[ ++idn ]=fan[ j ]*te;
}
}
sort( fan+1 , fan+1+idn );
}
const int mod=998244353;
int exgcd( int a , int b , int &x, int &y ) //扩展欧几里得求同余方程解; x,y及为 x*a+y*b=1 的一组可行解;
{
if( b==0 ){
x=1,y=0;
return a;
}
int com=exgcd( b , a%b , x , y );
int _x=x , _y=y ;
y=_x-(a/b)*_y; x=_y;
return com;
}
int getinv( int x , int m ) // exgcd获取x在模m情况下的逆元
{
int ans,y;
exgcd( x , m , ans , y );
ans=( ( ans%m )+m )%m;
return ans;
}
int inv[ N ];
void init( ){
for( int i=1; i<=idn; i++ ){
inv[ i ]=getinv( fan[ i ] , mod );
}
}
void solve(){
int n;
cin>>n;
//n=1e10;
dec( n );
init();
int ans=0;
bool ok=false;
map< int , int > mp;
for( int i=1; i<=idn; i++ ){
int p=fan[ i ];
//cout<<p<<" ";
for( int j=i; j<=idn; j++ ){
int q=fan[ j ];
if( p*q > n ){
ok=true;
break;
}
else if( n%( p*q )==0 ){
int te=p*inv[ j ]; te%=mod;
if( mp[ te ]==0 ){
mp[ te ]=1;
ans++;
}
}
}
if( ok ) break;
}
cout<<ans<<endl;
}
signed main() {
ios::sync_with_stdio( 0 );
cout.tie( 0 ); cin.tie( 0 );
int T=1;
cin>>T;
while( T-- ){
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 5676kb
input:
10 1 2 3 4 5 6 7 8 9 10
output:
1 2 2 3 2 5 2 4 3 5
result:
ok 10 lines
Test #2:
score: -100
Wrong Answer
time: 638ms
memory: 5984kb
input:
2000 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 6469693230 646969323...
output:
1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 1535 ...
result:
wrong answer 1st lines differ - expected: '29525', found: '1535'