#include <stdio.h>
int main() {
int n;
printf("enter values of n: ");
if (scanf("%d\n", &n) != 1) {
printf("invalid");
} else {
int sum = 1;
for(int i = 1; i <= n; i++) {
sum = n * i;
//printf("%d", sum);
}
printf("%d", sum);
}
return 0;
}
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