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Cod sursa(job #125770)
#include<stdio.h>
int n,i,j,m;
char s[17];
int a[2001];
int main()
{freopen("restante.in","r",stdin);
freopen("restante.out","w",stdout);
scanf("%d",&n);
for(i=1;i<=n;i++){
scanf(" %c ",s);
j=0;m=0;
while(s[j]){m=m+s[j];j++;}
a[m]++;}
m=0;
for(i=1;i<=2000;i++) if(a[i]==1) m++;
printf("%d",m);
fclose(stdout);
return 0;}