Codeforces 5A

<span style="font-size:18px;">#include "stdio.h"#include "string.h"int find_char(char s[200],char ch){int i,len;len=strlen(s);for(i=0;i<=len-1;i++){if(s[i]==ch)return i;}}int main(){char s[200],i,bytes=0,c=0;while(fgets(str, 120, stdin)!=NULL){if(s[0]=='+'){c++;continue;}if(s[0]=='-'){c--;continue;}i=find_char(s,':');bytes+=(c*(strlen(s)-1-i));}printf("%d",bytes);return 0;}</span>