#include <stdio.h>
int main(){
char c;
char pre_c=' ';
int count=0;
while (scanf("%c",&c)!=EOF && c!='\n'){
// printf("c=%c\n",c);
if (pre_c!=' ' && c==' '){count++;}
pre_c = c;
}
if (pre_c!=' ' && c=='\n'){count++;}
if (pre_c!=' ' && c==' '){count++;}
printf("%d",count);
return 0;
}
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