#include <stdio.h>
int main(void) {
int i,n;
char s[100];
n = myStrlen(s);
for(i=0;i<n;i++){
if(s[i]=='1'){
s[i]='I';
}
}
return 0;
}
int myStrlen(char s[]){
int i;
for(i=0;s[i]!='\0';i++)
;
return i;
}
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