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Cod sursa(job #901739)
#include <fstream>
#include <stdlib.h>
#include <string.h>
using namespace std;
ifstream f("imagine.in");
ofstream g("imagine.out");
int n, i, j, v[1001], k,nr1,nr;
char s[50001],sep[]=" ",*p;
int litera(char c)
{
if(c>='a'&&c<='z'||c>='A'&&c<='Z') return 1;
return 0;
}
int main()
{f.getline(s,50001);
n=strlen(s);
for(i=0;i<n;i++) if(!litera(s[i])) s[i]=' ';
p=strtok(s,sep);
while(p)
{
nr=nr+strlen(p);
nr1++;
p=strtok(NULL,sep);
}
g<<nr/nr1<<'\n';
return 0;
}