#include <stdio.h>
#include <string.h>
int main ()
{
int t,s=0,d=0;
char a [100];
scanf (“%d”, &t);
while ( t–)
{
scanf (“%s”, a);
if (strcmp (a, “donate”)==0)
{
scanf (“%d”, &d);
s += d;
}
else
printf (“%dn”, s);
}
return 0;
}
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