function big_multiply(A, B)
{
    var m, n, mn, i, j, carry, tmp;
    var buf, a1, a2;
    
    if(A.length > B.length){
        m = A.length;
        n = B.length;
        a1 = A.split("");
        a2 = B.split("");
    }
    else{
        m = B.length;
        n = A.length;
        a1 = B.split("");
        a2 = A.split("");
    }
    
    mn = m + n;
    if(mn < 7) return 0;
    buf = new Array(mn+1);
    for(j=0;j<=mn;++j) buf[j] = 0;
    
    for(j=m-1;j>=0;--j){
        for(carry = 0,i=n-1;i>=0;--i){
            tmp = parseInt(a1[j]) * parseInt(a2[i]) + buf[i+j+1] + carry;
            buf[i+j+1] = tmp % 10;
            carry = parseInt(tmp / 10);
        }
        buf[j] = carry;
    }
    
    for(j=0;j<=mn;++j){
        if(buf[j] > 0) break;
    }
    
    return (mn - j >= 7) ? 1 : 0;
}

process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function(input){
    var line = input.trim().split("\n");
    var i = 0;
    while(true){
        var N = parseInt(line[i].trim());
        if( N === 0 ){
            break;
        }
        else{
            var found, len, k, res;
            var qualified = [];
            for(var j=0;j<N;++j){
                var dataset = line[++i].trim().split(" ");
                res = parseInt(dataset[1]) * parseInt(dataset[2]);

                if( big_multiply(dataset[1], dataset[2]) === 0 ){
                    found = 0;
                    for(k=0, len=qualified.length;k<len;++k){
                        if(qualified[k] == dataset[0]){
                            found = 1;
                            break;
                        }
                    }
                    
                    if( found === 0 ){
                        qualified.push(dataset[0]);
                    }
                }
            }
            
            len = qualified.length;
            if( len === 0 ){
                console.log("NA");
            }
            else{
                for(k=0;k<len;++k){
                    console.log(qualified);
                }
            }
        }
    }
});