Submission #338699

#	Time	Username	Problem	Language	Result	Execution time	Memory
338699		limabeans	Sequence (BOI14_sequence)	C++17	9 / 100	1089 ms	620 KiB

sequence

#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;



int n;
vector<int> a;



set<int> digits(int x) {
    set<int> res;
    while (x) {
	res.insert(x%10);
	x/=10;
    }
    return res;
}

bool test(int x) {
    for (int i=0; i<n; i++) {
	int cur=x+i;
	bool ok = false;
	while (cur) {
	    if (a[i]==cur%10) {
		ok=true; break;
	    }
	    cur/=10;
	}
	if (!ok) {
	    return false;
	}
    }
    return true;
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

    cin>>n;
    a.resize(n);
    set<int> st;
    for (int i=0; i<n; i++) {
	cin>>a[i];
	st.insert(a[i]);
    }

    if ((int)st.size() == 1) {
	int d = *st.begin();
	if (1<=d && d<=8) {
	    int ten = 1;
	    while (ten < n) ten *= 10;
	    cout<<(d*ten)<<endl;
	} else if (d==0) {
	    int ans = 10;
	    int hit = 1;
	    while (hit<n) {
		ans *= 10;
		hit *= 10;
	    }
	    cout<<ans<<endl;
	} else if (d==9) {
	    for (int len=1;;len++) {
		string lo;
		for (int i=0; i<len-1; i++) lo += '8';
		lo += '9';
		string hi(len,'9');
		int have = stoi(hi)-stoi(lo)+1;
		if (have >= n) {
		    cout<<lo<<endl;
		    break;
		}
	    }
	}
	return 0;
    }

    for (int i=1; ; i++) {
	if (test(i)) out(i);
    }

    assert(false);    
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 33
• Subtask 3: 0 / 25
• Subtask 4: 0 / 33