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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4. #define int long long
  5. #define pb push_back
  6. #define fi first
  7. #define se second
  8. #define nn '\n'
  9. #define pi pair<ll,ll>
  10. #define unmp unordered_map
  11. #define uns unordered_set
  12. #define TASK ""
  13. int mod = 1e9+7;
  14. const int N = 1e6 + 5;
  15. int MOD = 998244353;
  16. int bit[200000];
  17. string n;
  18. priority_queue<int> pq;
  19. signed main() {
  20.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  21.     if(fopen(TASK".INP","r")){
  22.             freopen(TASK".INP","r",stdin);
  23.             freopen(TASK".OUT","w",stdout);
  24.     }
  25.     while(cin >> n){
  26.         if(n[0] == '+' && pq.size() < 15000){
  27.             int x = stoi(n.substr(1));
  28.             pq.push(x);
  29.         }
  30.         else{
  31.             if(!pq.empty()){
  32.                 int k = pq.top();
  33.                 pq.pop();
  34.                 while(pq.top() == k){
  35.                     pq.pop();
  36.                 }
  37.             }
  38.         }
  39.     }
  40.     cout << pq.size() << nn;
  41.     while(!pq.empty()){
  42.         cout << pq.top() << nn;
  43.         pq.pop();
  44.     }
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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+1
+3
+2
+3
-
+4
+4
-
+2
+90
+77
+82
-
stdout
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5
82
77
2
2
1
https://ideone.com/lOFL2c
language:
C++14 (gcc 8.3)
created:
6 hours ago
visibility:
public

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