#include <bits/stdc++.h>
#include <boost/algorithm/string/replace.hpp>
using namespace std;
using namespace boost::algorithm;
string source="#include <bits/stdc++.h>\n#include <boost/algorithm/string/replace.hpp>\nusing namespace std;\nusing namespace boost::algorithm;\nstring source=\"@\";\nstring build(string str){\n    string ret = str;\n    replace_all(str, \"\\\\\", \"\\\\\\\\\");\n    replace_all(str, \"\\n\", \"\\\\n\");\n    replace_all(str, \"\\\"\", \"\\\\\\\"\");\n    replace_all(ret, \"\\x40\", str);\n    return ret;\n}\nint main(){\n    string str = build(source);\n    for(int i=0; i<str.length(); i++){\n        char c = getchar();\n        if(c != str[i]){\n            cout << i << endl << (char)34 << str[i] << (char)34 << endl << (char)34 << c << (char)34 << endl;\n            break;\n        }\n    }\n    return 0;\n}";
string build(string str){
    string ret = str;
    replace_all(str, "\\", "\\\\");
    replace_all(str, "\n", "\\n");
    replace_all(str, "\"", "\\\"");
    replace_all(ret, "\x40", str);
    return ret;
}
int main(){
    string str = build(source);
    for(int i=0; i<str.length(); i++){
        char c = getchar();
        if(c != str[i]){
            cout << i << endl << (char)34 << str[i] << (char)34 << endl << (char)34 << c << (char)34 << endl;
            break;
        }
    }
    return 0;
}