#include <iostream>
#include <string>
using namespace std;
string source="#include <iostream>\n#include <string>\nusing namespace std;\nstring source=\"@\";\nstring replace_all(string str, string c, string r){\n    string ret = \"\";\n    for(char s : str)\n        if(s == c[0]) ret += r;\n        else ret += s;\n    return ret;\n}\nstring build(string str){\n    string ret=str;\n    str=replace_all(str, \"\\\\\", \"\\\\\\\\\");\n    str=replace_all(str, \"\\n\", \"\\\\n\");\n    str=replace_all(str, \"\\\"\", \"\\\\\\\"\");\n    ret=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 replace_all(string str, string c, string r){
    string ret = "";
    for(char s : str)
        if(s == c[0]) ret += r;
        else ret += s;
    return ret;
}
string build(string str){
    string ret=str;
    str=replace_all(str, "\\", "\\\\");
    str=replace_all(str, "\n", "\\n");
    str=replace_all(str, "\"", "\\\"");
    ret=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;
}