104.cpp

#include <iostream>
#include <sstream>
#include <algorithm>
#include <iterator>
#include <vector>
#include <deque>
#include <set>
#include <cmath>
using namespace std;

#define REP(i,n) for(int i=0;i<(n);++i)
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for(int i=(a);i>=(b);--i)
typedef long long LL;

vector<string> split( const string& s, const string& delim =" " ) {
    vector<string> res;
    string t;
    for ( int i = 0 ; i != s.size() ; i++ ) {
        if ( delim.find( s[i] ) != string::npos ) {
            if ( !t.empty() ) {
	res.push_back( t );
	t = "";
            }
        } else {
            t += s[i];
        }
    }
    if (!t.empty() ) {
        res.push_back(t);
    }
    return res;
}

vector<int> splitInt( const string& s, const string& delim =" " ) {
    vector<string> tok = split( s, delim );
    vector<int> res;
    for ( int i = 0 ; i != tok.size(); i++ )
        res.push_back( atoi( tok[i].c_str() ) );
    return res;
}

LL gcd(LL a,LL b){
    return b?gcd(b,a%b):a;
}

inline LL lcm(LL a,LL b){
    return a/gcd(a,b)*b;
}

int s2i(string s) {
    stringstream ss;
    ss << s;
    int res;
    ss >> res;
    return res;
}

string i2s(int n) {
    stringstream ss;
    ss << n;
    string res;
    ss >> res;
    return res;
}

string add(string a, string b) {
    int la = a.length(), lb = b.length();
    int add = 0;
    REP(i,la) {
        int t = a[i] - '0' + b[i] - '0' + add;
        b[i] = t % 10 + '0';
        add = t / 10;
    }
    FOR(i,la,lb-1) {
        int t = b[i] - '0' + add;
        b[i] = t % 10 + '0';
        add = t / 10;
    }
    if (add == 1) b += "1";
    return b;
}

bool isok(string s) {
    if (s.length() < 9) return false;
    int v[10];
    memset(v, 0, sizeof(v));
    v[0] = 1;
    REP(i,9) {
        int t = s[i] - '0';
        if (v[t] == 1) return false;
        v[t] = 1;
    }
    memset(v, 0, sizeof(v));
    v[0] = 1;
    REP(i,9) {
        int t = s[s.length() - 1 - i] - '0';
        if (v[t] == 1) return false;
        v[t] = 1;
    }
    return true;
}

void run() {
    string a = "1", b = "1";
    int idx = 3;
    while (true) {
        string c = add(a, b);
        if (idx % 10000 == 0) cout << idx << " - " << c << endl;
        if (isok(c)) {
            cout << idx << endl;
            cout << c << endl;
            break;
        }
        a = b, b = c;
        ++idx;
    }
}

int main() {
    run();
}