///...................SUBHASHIS MOLLICK...................///
///.....DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING....///
///.............ISLAMIC UNIVERSITY,BANGLADESH.............///
///....................SESSION-(14-15)....................///
#include<bits/stdc++.h>
using namespace std;
#define sf(a) scanf("%lld",&a)
#define sf2(a,b) scanf("%lld %lld",&a,&b)
#define sf3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c)
#define pf(a) printf("%lld",a)
#define pf2(a,b) printf("%lld %lld",a,b)
#define pf3(a,b,c) printf("%lld %lld %lld",a,b,c)
#define nl printf("\n")
#define timesave ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define ll long long
#define pb push_back
#define MPI map<int,int>mp;
#define fr(i,n) for(i=0;i<n;i++)
#define fr1(i,n) for(i=1;i<=n;i++)
#define frl(i,a,b) for(i=a;i<=b;i++)
/*primes in range 1 - n
1 - 100(1e2) -> 25 pimes
1 - 1000(1e3) -> 168 primes
1 - 10000(1e4) -> 1229 primes
1 - 100000(1e5) -> 9592 primes
1 - 1000000(1e6) -> 78498 primes
1 - 10000000(1e7) -> 664579 primes
large primes ->
104729 1299709 15485863 179424673 2147483647 32416190071 112272535095293 48112959837082048697
*/
//freopen("Input.txt","r",stdin);
//freopen("Output.txt","w",stdout);
//const int fx[]={+1,-1,+0,+0};
//const int fy[]={+0,+0,+1,-1};
//const int fx[]={+0,+0,+1,-1,-1,+1,-1,+1}; // Kings Move
//const int fy[]={-1,+1,+0,+0,+1,+1,-1,-1}; // Kings Move
//const int fx[]={-2, -2, -1, -1, 1, 1, 2, 2}; // Knights Move
//const int fy[]={-1, 1, -2, 2, -2, 2, -1, 1}; // Knights Move
long flag=0,ar[10]={0},vis[10];
void call(long pos,long sum)
{
if(pos==5&&sum==23)
{
flag=1;
return;
}
else
{
for(long i=0;i<5;i++)
{
if(vis[i]==0)
{
vis[i]=1;
call(pos+1,sum+ar[i]);
call(pos+1,sum*ar[i]);
call(pos+1,sum-ar[i]);
vis[i]=0;
}
}
}
}
main()
{
timesave;
long a,b,c,d,e;
while(cin>>a>>b>>c>>d>>e)
{
if(a==0&&b==0&&c==0&&d==0&&e==0)
break;
else
{
ar[0]=a;
ar[1]=b;
ar[2]=c;
ar[3]=d;
ar[4]=e;
}
flag=0;
long i;
for(i=0;i<5;i++)
{
vis[i]=1;
call(1,ar[i]);
vis[i]=0;
}
if(flag==1)
{
cout<<"Possible"<<endl;
}
else
cout<<"Impossible"<<endl;
}
}
///.....DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING....///
///.............ISLAMIC UNIVERSITY,BANGLADESH.............///
///....................SESSION-(14-15)....................///
#include<bits/stdc++.h>
using namespace std;
#define sf(a) scanf("%lld",&a)
#define sf2(a,b) scanf("%lld %lld",&a,&b)
#define sf3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c)
#define pf(a) printf("%lld",a)
#define pf2(a,b) printf("%lld %lld",a,b)
#define pf3(a,b,c) printf("%lld %lld %lld",a,b,c)
#define nl printf("\n")
#define timesave ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define ll long long
#define pb push_back
#define MPI map<int,int>mp;
#define fr(i,n) for(i=0;i<n;i++)
#define fr1(i,n) for(i=1;i<=n;i++)
#define frl(i,a,b) for(i=a;i<=b;i++)
/*primes in range 1 - n
1 - 100(1e2) -> 25 pimes
1 - 1000(1e3) -> 168 primes
1 - 10000(1e4) -> 1229 primes
1 - 100000(1e5) -> 9592 primes
1 - 1000000(1e6) -> 78498 primes
1 - 10000000(1e7) -> 664579 primes
large primes ->
104729 1299709 15485863 179424673 2147483647 32416190071 112272535095293 48112959837082048697
*/
//freopen("Input.txt","r",stdin);
//freopen("Output.txt","w",stdout);
//const int fx[]={+1,-1,+0,+0};
//const int fy[]={+0,+0,+1,-1};
//const int fx[]={+0,+0,+1,-1,-1,+1,-1,+1}; // Kings Move
//const int fy[]={-1,+1,+0,+0,+1,+1,-1,-1}; // Kings Move
//const int fx[]={-2, -2, -1, -1, 1, 1, 2, 2}; // Knights Move
//const int fy[]={-1, 1, -2, 2, -2, 2, -1, 1}; // Knights Move
long flag=0,ar[10]={0},vis[10];
void call(long pos,long sum)
{
if(pos==5&&sum==23)
{
flag=1;
return;
}
else
{
for(long i=0;i<5;i++)
{
if(vis[i]==0)
{
vis[i]=1;
call(pos+1,sum+ar[i]);
call(pos+1,sum*ar[i]);
call(pos+1,sum-ar[i]);
vis[i]=0;
}
}
}
}
main()
{
timesave;
long a,b,c,d,e;
while(cin>>a>>b>>c>>d>>e)
{
if(a==0&&b==0&&c==0&&d==0&&e==0)
break;
else
{
ar[0]=a;
ar[1]=b;
ar[2]=c;
ar[3]=d;
ar[4]=e;
}
flag=0;
long i;
for(i=0;i<5;i++)
{
vis[i]=1;
call(1,ar[i]);
vis[i]=0;
}
if(flag==1)
{
cout<<"Possible"<<endl;
}
else
cout<<"Impossible"<<endl;
}
}
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