#pragma TASS input 
int N_BOUND;
#pragma TASS input {n>=0 && n<=N_BOUND} 
int n;
#pragma TASS output 
int t;

void main () {
  int i=1;
  int s=0;

  l2:
  while (i < n + 1) {
    s = s + i;
	i = i + 1;
  }
  t = s;
}
