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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. #define fast ios_base::sync_with_stdio(0),cin.tie(0);
  4. using namespace std;
  5. const ll N=1e5,M=1e6+5;
  6.  
  7. map<ll,map<ll,ll>> d;
  8.  
  9. int main(){
  10. d[0][1]++;
  11. d[1]=d[0];
  12. cout<<d[1][1];
  13.  
  14. return 0;
  15. }
  16.  
Success #stdin #stdout 0s 5284KB
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https://ideone.com/ZZEsZs
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

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