Ugly C++ quine

check.sh

#!/bin/bash
g++ -O2 -Wall quine.cpp -o quine && ./quine > result.cpp && diff quine.cpp result.cpp

quine.cpp

#include <iostream>
#include <string>
using namespace std;char n[]={92,110};int main(){string s="#include <iostream>\n#include <string>\nusing namespace std;char n[]={92,110};int main(){string s=\"\",t=s;cout<<s.replace(97,0,t.replace(19,1,n).replace(38,1,n).replace(98,0,1,92).replace(100,0,1,92));}",t=s;cout<<s.replace(97,0,t.replace(19,1,n).replace(38,1,n).replace(98,0,1,92).replace(100,0,1,92));}