#include<stdio.h> #include<string.h> #include<math.h> #include<malloc.h> int main(){ int n, m; scanf("%d%d", &n, &m); long int sum=0; long int s; for (int i = 0;i < m;i++) { sum = sum + n; n = n * 10 + n; } printf("%ld\n", sum); } |
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