include fstream using namespace std ifstream cin segredo in ofstream c

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#include <fstream>
using namespace std;
ifstream cin("segredo.in");
ofstream cout("segredo.out");
char c; //a=97 z=122
int a[125],minA,maxA=0;
int main(){
while(cin>>c)
{
cin>>c;
a[(int)c]++;
}
minA=a[97];
for (int i=97;i<123;i++)
{
if(minA>=a[i]) minA=a[i];
if(maxA<=a[i]) maxA=a[i];
}
for (int i=97;i<123;i++)
{
if(a[i]==maxA) cout<<(char)i;
}
cout<<endl;
for (int i=97;i<123;i++)
{
if(a[i]==minA) cout<<(char)i;
}
return 0;
}