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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define MM ios_base::sync_with_stdio(false),cin.tie(nullptr),cout.tie(nullptr);
  4. int main(){
  5.     MM
  6.     int n,m,sum=0;
  7.     cin>>n>>m;
  8.     vector<int> v(n);
  9.     for (auto &i:v) {
  10.         cin>>i;
  11.     }
  12.     sort(v.begin(),v.end());
  13.  
  14.     for (int i=-m;i<=m;i++) {
  15.         if (v[sum]!=i) {
  16.             cout<<i;
  17.             break;
  18.         }
  19.         if (sum==n-1) {
  20.             cout<<v[sum]+1;
  21.             break;
  22.         }
  23.         sum++;
  24.     }
  25. }
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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4 5 -5 -4 -3 -2
stdout
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-1
https://ideone.com/ACW1zo
language:
C++14 (gcc 8.3)
created:
9 days ago
visibility:
public

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