#include <stdio.h> #include <stdlib.h> int main() { int n,k=0,syl,i; scanf("%d",&n); for(i=0;i<=n;i++) { syl=(i*i)-i; if(i<10&&syl%10==0) { k++; continue; } else {if(i<100&&i>10&&syl%100==0) {k++; continue; } else {if(i<1000&&i...
