31 lines
495 B
C
31 lines
495 B
C
#include <stdio.h>
|
|
|
|
int main() {
|
|
int N;
|
|
scanf("%d",&N);
|
|
|
|
int n=N, cnt=0;
|
|
while(n!=0) {
|
|
cnt++;
|
|
n /=10;
|
|
}
|
|
|
|
int start = N - 9*cnt < 1 ? 1 : N - 9*cnt;
|
|
for(int i=start; i<N; i++) {
|
|
int res_sum=0, num = i;
|
|
while(num!=0) {
|
|
res_sum += num%10;
|
|
num/=10;
|
|
}
|
|
res_sum += i;
|
|
|
|
if(res_sum==N) {
|
|
printf("%d\n",i);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
printf("0\n");
|
|
|
|
return 0;
|
|
} |