from flask import Flask, request, jsonify
app=Flask(__name__)

@app.route("/")
def home():
    return "it is running"

@app.route("/num", methods=["GET", "POST"])
def num():
    if request.method=="POST":
        data=request.get_json()
        a=data.get("a")
        b=data.get("b")
        c=data.get("c")
    else:
        a=int(request.args.get("a"))
        b=int(request.args.get("b"))
        c=int(request.args.get("c"))

    return jsonify({"max": max(a,b,c)})


if __name__=="__main__":
    app.run(debug=True)