import std.algorithm;
import std.array;
import std.conv;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

int readint() {
    return readln.chomp.to!int;
}

int[] readints() {
    return readln.split.map!(to!int).array;
}

bool calc(int rows, int cols, int k) {
    for (int i = 0; i <= rows; i++) {
        for (int j = 0; j <= cols; j++) {
            int n = (cols - j) * i + (rows - i) * j;
            if (n == k)
                return true;
        }
    }
    return false;
}

void main() {
    auto xs = readints;
    int n = xs[0], m = xs[1], k = xs[2];

    writeln(calc(n, m, k) ? "Yes" : "No");
}
