#include <iostream>
	

	

		#include <cstdio>
	

	

		#include <map>
	

	

		#include <string>
	

	

		#include <sstream>
	

	

		#include <vector>
	

	

		#include <set>
	

	

		#include <bitset>
	

	

		using namespace std;
	

	

		ostringstream ostr;
	

	

		struct ip_addr {
	

	

		bitset<32> s1,s2,s3,s4;
	

	

		unsigned int l;
	

	

		bitset<32> bin;
	

	

		};
	

	

		int main(){
	

	

		int n= 0;
	

	

		cin >> n;
	

	

		vector<ip_addr> ips;
	

	

		vector<string> ipstring;
	

	

		set<int> idx;
	

	

		for(int i = 0; i < n; i++){
	

	

		ip_addr ip;
	

	

		unsigned int s1,s2,s3,s4,l;
	

	

		scanf("%d.%d.%d.%d/%d",&s1,&s2,&s3,&s4,&ip.l);
	

	

		ip.s1 = bitset<32>(s1);
	

	

		ip.s2 = bitset<32>(s2);
	

	

		ip.s3 = bitset<32>(s3);
	

	

		ip.s4 = bitset<32>(s4);
	

	

		ip.bin = ((ip.s1<<8 | ip.s2)<<8 | ip.s3)<<8 | ip.s4;
	

	

		ips.push_back(ip);
	

	

		bool flag =false;
	

	

		for(auto j:idx){
	

	

		ip_addr tmp = ips[j];
	

	

		unsigned int tmp_l = tmp.l;
	

	

		bool current_wider = tmp.l>ip.l;
	

	

		unsigned int len = current_wider?ip.l:tmp.l;
	

	

		string compare="00000000000000000000000000000000";
	

	

		string _xor = (tmp.bin^ip.bin).to_string();
	

	

		if(compare.substr(0,len) == _xor.substr(0,len)){
	

	

		if(current_wider){
	

	

		idx.erase(j);
	

	

		}
	

	

		else{
	

	

		flag = true;
	

	

		}
	

	

		}
	

	

		}
	

	

		if(flag){
	

	

		continue;
	

	

		}
	

	

		idx.insert(i);
	

	

		}
	

	

		cout<<idx.size()<<endl;
	

	

		for(auto j:idx){
	

	

		ip_addr ip = ips[j];
	

	

		cout<<ip.s1.to_ulong()<<'.'<<ip.s2.to_ulong()<<'.'<<ip.s3.to_ulong()<<'.'<<ip.s4.to_ulong()<<'/'<<ip.l<<endl;
	

	

		}
	

	

		return 0;
	

	

		}