#include<sys/socket.h>
#include<sys/types.h>
#include<netinet/ip.h>
#include<netdb.h>
#include<netinet/ip.h>
#include<arpa/inet.h>
#include<stdio.h>
#include<string.h>
#include<unistd.h>
#include<stdlib.h>


int main(){
	struct sockaddr_in sad;
	sad.sin_port = htons(1337);
	sad.sin_addr.s_addr = INADDR_ANY;
	sad.sin_family = AF_INET;

	int skt = socket(AF_INET, SOCK_STREAM, 0);
	bind(skt, (struct sockaddr *)(&sad), sizeof(struct sockaddr_in));
	listen(skt, 5);
	char type[5];
	uint64_t a, b;
	for(;;){
		int client_fd = accept(skt, 0, 0);
		while(read(client_fd, type, 4) == 4){
			read(client_fd, &a, 8);
			read(client_fd, &b, 8);
			if(b == 0){
				write(client_fd, "LAZY", 4);
				a = 1;
			} else {
				if(strncmp(type, "DIVI", 4) == 0){
					a = a / b;
				} else {
					a = a % b;
				}
				write(client_fd, "RESL", 4);
			}
			write(client_fd, &a, 8);
		}
		close(client_fd);
	}
	return 0;
}