ACPC10E

gistfile1.cpp

//============================================================================
// Name        : SPOJ.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
#include <stdio.h>


#include <math.h>

using namespace std;

int main() {
	long G=1,T=0,A=0,D=0;
	while(G!=-1||T!=-1||A!=-1||D!=-1){
		scanf ("%ld %ld %ld %ld\n",&G,&T,&A,&D);
		if(G>0){
			long teams=G*A+D;
			long p2=ceil(log2(teams));
			long h2=pow(2,p2);
			long Y=h2-teams;
			long X=h2-1+G*(T-1)*T/2;
			printf ("%ld*%ld/%ld+%ld=%ld+%ld\n",G,A,T,D,X,Y);
		}

	}
	return 0;
}