String calculer_avis(double math, double ang) { 
	double moy; 
	String avis; 
	moy = (math+ang)/2; 
	if (moy<10) {
		avis = "refuse"; 
	}
	else if (moy<12) {
		avis = "passable"; 
	}
	else if (moy<14) {
		avis = "assez bien"; 
	}
	else if (moy<16) {
		avis = "bien"; 
	}
	else {
		avis = "tres bien"; 
	}
	return avis;
} 

void main() {
	int nbEtud; 
	double math; 
	double ang; 
	String avis; 
	int k; 
	int nbRefuse; 
	nbEtud = readInt( "nbEtud : " ); 
	nbRefuse = 0; 
	for(k=1; k<=nbEtud; k=k+1) {
		math = readDouble( "math : " ); 
		ang = readDouble( "ang : " ); 
		avis = calculer_avis(math, ang); 
		println( "avis : " + avis ); 
		if (equal(avis,"refuse")) {
			nbRefuse = nbRefuse+1; 
		}
	}
	println( "nbRefuse : " + nbRefuse ); 
}