#The Biggest Water Problem#
The Biggest Water Problem
https://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
#include <stdio.h>
int main() {
int a = 0, result = 0;
scanf("%d", &a);
while (a >= 1) {
// printf("%d\n", a % 10);
result += a % 10;
a /= 10;
if (a == 0 && result >= 10) {
a = result;
result = 0;
}
}
printf("%d", result);
return 0;
}
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