#include <stdio.h>
int main(int argc,char argv*[]){
int i = 0;
int BUFFA;
while(argv[i]!='\0'){
if(argv[i]='a')
BUFFA++;
else if(argv[i]='b')
BUFFA--;
else if(argv[i]='c')
printf("%i\n",BUFFA);
else printf("%s","Error.\n");
}
}
”PROG"！
b=0
for c in open(__import__('sys').argv[1]).read():
if c=='a':b+=1
if c=='b':b-=1
if c=='c':print b,
$
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaacaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaacaaaaaacbbbbbbbbbbbbbbbbbb
bcaaaaaaaaaacbbbbbbbcbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbca
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaac
aaaaaaaaaaaaaaaaaaaaaaaaaaacbbccbbcaaaaaaaaaaa
aacliftM2 aaaacbcaaac aaccbcaaaaaacc bbbbbbbbbbbbbcacbbbbbbbbbbbb