Algorithm Analysis

The number $n$ is three-digit. Therefore,to append the digit 3 to the number $n$ from both left and right, it is enough to multiplyit by 10 and add the number 30003 to the result.

If $n=$, then $10\ast n+30003=$.

Algorithm Implementation

Readthe input value $n$.

scanf("%d", &n);

Computeand display the answer.

res = n * 10 + 30003;
printf("%d\n", res);