void main() {
	double math; 
	double ang; 
	double moy; 
	String avis; 
	math = readDouble( "math : " ); 
	ang = readDouble( "ang : " );
	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";
	}
	println( "moyenne : " + moy ); 
	println( "avis : " + avis ); 
}