#include <stdio.h>
#include <string.h>
int main()
{
char ch
[10001];
int a
[4]={0},len
;
gets(ch
);
len
=strlen(ch
);
for(int i
=0;i
<len
;i
++)
{
if(ch
[i
]=='G'||ch
[i
]=='g')
a
[0]++;
if(ch
[i
]=='P'||ch
[i
]=='p')
a
[1]++;
if(ch
[i
]=='L'||ch
[i
]=='l')
a
[2]++;
if(ch
[i
]=='T'||ch
[i
]=='t')
a
[3]++;
}
while(1)
{
if(a
[0]==0&&a
[1]==0&&a
[2]==0&a
[3]==0)
break;
if(a
[0]>0)
{
printf("G");
a
[0]--;
}
if(a
[1]>0)
{
printf("P");
a
[1]--;
}
if(a
[2]>0)
{
printf("L");
a
[2]--;
}
if(a
[3]>0)
{
printf("T");
a
[3]--;
}
}
return 0;
}
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