let n = Number(gets());
let OddLine;
let EvenLine;
let productOddLines = 1;
let productEvenLines = 1;

for (let i = 0; i < n/2; i++) {
    OddLine = Number(gets());
    if (!isNaN(OddLine)) {
        productOddLines *= OddLine;
    }

    EvenLine = Number(gets());
    if (!isNaN(EvenLine)) {
        productEvenLines *= EvenLine;
    }
}

if (productOddLines === productEvenLines) {
    print(`yes ${productOddLines}`);
} else {
    print(`no ${productOddLines} ${productEvenLines}`);
}