This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e5 + 10;
int K,vetor[MAXN],freq[10][2];
int check(int ini){
for(int i = ini + K - 1,ptr = 1;ptr <= K;i--,ptr++){
if(i == 0 && vetor[K - ptr + 1] == 0) continue;
int copia = i;
while(copia != 0 && copia % 10 != vetor[K - ptr + 1]) copia /= 10;
if(copia == 0) return 0;
}
return 1;
}
void adiciona(int v){
while(v != 0){
freq[v % 10][0]++;
v /= 10;
}
}
void tira(int v){
while(v != 0){
freq[v % 10][0]--;
v /= 10;
}
}
int prune(){
for(int i = 0;i<=9;i++){
if(freq[i][0] < freq[i][1]) return 0;
}
return 0;
}
int main(){
cin >> K;
for(int i = 1;i<=K;i++){
cin >> vetor[i];
freq[vetor[i]][1]++;
}
if(K <= 1000){
for(int i = 1;i<=K;i++) adiciona(i);
for(int i = 1;i<=1000000;i++){
if(prune()){
adiciona(i+K);
tira(i);
}
if(check(i)){
cout << i << endl;
return 0;
}
adiciona(i+K);
tira(i);
}
}
if(vetor[1] == 9){
int geratriz = 8;
while(true){
if(check(geratriz + 1)){
cout << geratriz + 1 << endl;
return 0;
}
geratriz *= 10;
geratriz += 8;
}
}
else if(vetor[1] == 0){
int ini = 1;
while(true){
if(check(ini)){
cout << ini << endl;
return 0;
}
ini *= 10;
}
}
else{
int ini = vetor[1];
while(true){
if(check(ini)){
cout << ini << endl;
return 0;
}
ini *= 10;
}
}
return 0;
}
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