function solve (input){
    let name=input.shift()
    let totalGrade=0
let classes=0
let failsCounter=0

    while(classes<=12){
let grade=Number(input.shift())
if(grade<4){
    failsCounter++
} else {
    totalGrade+=grade
    classes++
}
if (failsCounter >1) {
    console.log(`${name} has been excluded at ${classes} grade`);
    break;
}
    }
    if(failsCounter<1){
    console.log(`${name} graduated. Average grade: ${(totalGrade/12).toFixed(2)}`)
}}