#include <stdio.h>
int main () {
int x, y;
if (x < y && x > 1 && x < 20 && y < 10000) {
for (int i
= 2; i
<= x
; i
++) printf(" %d", i
); for (int i
= x
+ 2; i
<= y
; i
++) printf(" %d", i
); }
}
//https://pt.stackoverflow.com/q/271685/101
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