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  1. #include <iostream>
  2. #include <string>
  3. #include <cctype>
  4. #include <set>
  5.  
  6. using namespace std;
  7. int main() {
  8.  
  9.     set<long long int>s;
  10.     set<long long int>::iterator it;
  11.  
  12.     long long int t;
  13.  
  14.     string a;
  15.  
  16.     long long int tmp = 0;
  17.     long long int ln;
  18.     long long int nm = 1;
  19.     long long int mxm = 0;
  20.     bool negative = false;
  21.  
  22.     while(!cin.eof()) {
  23.  
  24.         cin >> t;
  25.         getline(cin,a);
  26.         ln = a.length();
  27.         a+=" ";
  28.         for(int i = 1;i<ln;++i) {
  29.             if(!isspace(a[i])) {
  30.                 if(a[i] == '-') {negative = true;++i;}
  31.                 while(!isspace(a[i])) {
  32.                     tmp*=10;
  33.                     tmp+=(int)a[i]-48;
  34.                     ++i;
  35.                 }
  36.                 if(negative) tmp = -tmp;
  37.                 s.insert(tmp);
  38.                 tmp = 0;
  39.                 negative = false;
  40.             }
  41.         }
  42.         for(it=s.begin();it!=s.end();++it) {
  43.             mxm++;
  44.         }
  45.         if(mxm < t) cout << "-" << endl;
  46.         else {
  47.             for(it=s.begin();it!=s.end();++it) {
  48.                 if(mxm == t) {
  49.                     cout << *it << endl;
  50.                     break;
  51.                 }
  52.                 mxm--;
  53.             }
  54.         }
  55.  
  56.         s.clear();
  57.         mxm = 0;
  58.     }
  59. return 0;
  60. }
  61.  
Success #stdin #stdout 0s 3468KB
comments (?)
stdin
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3 10 20 30
4 10 20 30 30
2 1 2 6 8 9
1 16 16 18
stdout
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10
-
8
18
https://ideone.com/W4mpmD
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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