function main(input){
    var tmp = input.split(' ');
    var N = Number(tmp[0]);
    var M = Number(tmp[1]);
    var K = Number(tmp[2]);

    var num;
    for(var i=0; i<N; i++){
        for(var j=0; j<M+1; j++){
            num = N*i + M*j - i*j*2;
            if(num==K){
                console.log("Yes");
                return;
            }
        }
    }
    console.log("No");

}

main(require("fs").readFileSync("/dev/stdin", "utf8"));