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- #include <bits/stdc++.h>
- using namespace std;
- #define ll long long
- #define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
- map<ll,ll>x;
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);cout.tie(0);
- ll a[10000],c,d,e,i,j,k,l;
- cin>>c;
- for(i=0;i<c;i++)
- {
- cin>>a[i];
- }
- sort(a,a+c);
- l=0;
- for(i=0;i<c-2;i++)
- {
- for(j=i+1;j<c-1;j++)
- {
- for(k=j+1;k<c;k++)
- {
- if(a[i]+a[j]>a[k])
- {
- if(x[i]==0 && x[j]==0 && x[k]==0)
- {
- l++;
- x[i]=1;
- x[j]=1;
- x[k]=1;
- }
- }
- }
- }
- }
- cout<<l<<endl;
- return 0;
- }
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