#include <stdio.h>
#include <stdlib.h>

int main() {
	int i, sum, tab[100];

	for (i=0; i<100; ++i) {
		tab[i] = i+1;
	}

	for (i=0, sum = 0; (i<100) && (sum < 50); ++i) {
		sum += tab[i];
	}
	
	printf("sum = %d\n", sum);
	
	return 0;
}