13 lines
208 B
C++
13 lines
208 B
C++
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#include<bits/stdc++.h>
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using namespace std;
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int main(){
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unordered_set<int> us;
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us.insert(2);
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us.insert(1);
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us.insert(4);
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us.insert(5);
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for(auto el:us)
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cout<<el;
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cout<<endl;
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}
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