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// A 1x1 PNG image.
const IMAGE = atob(
"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAA" +
"ACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII="
);
function handleRequest(aRequest, aResponse) {
aResponse.setStatusLine(aRequest.httpVersion, 200);
if (aRequest.queryString.includes("result")) {
aResponse.write(getState("hints") || 0);
setState("hints", "0");
} else {
let hints = parseInt(getState("hints") || 0) + 1;
setState("hints", hints.toString());
aResponse.setHeader("Set-Cookie", "foopy=1");
aResponse.setHeader("Content-Type", "image/png", false);
aResponse.write(IMAGE);
}
}