Java tutorial
//package com.java2s; /* * Copyright 2013 Valentyn Kolesnikov * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.math.BigInteger; public class Main { static BigInteger addmod(BigInteger a, BigInteger b, BigInteger p) { if (p.subtract(b).compareTo(a) > 0) { return a.add(b); } else { return a.add(b).subtract(p); } } }