process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

function canConstruct(a) {
    // Return "Yes" or "No" denoting whether you can construct the required number.
    //console.log(a.join('').split('').reduce((a,b)=>+a + +b,0))
    return a.join('').split('').reduce((a,b)=>+a + +b,0) % 3 ? 'No' : 'Yes'
}

function main() {
    var t = parseInt(readLine());
    for(var a0 = 0; a0 < t; a0++){
        var n = parseInt(readLine());
        a = readLine().split(' ');
        a = a.map(Number);
        var result = canConstruct(a);
        process.stdout.write("" + result + "\n");
    }

}