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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4.  
  5. int main() {
  6. 	ll n; cin >> n;
  7. 	ll ans = 0;
  8. 	for (ll i = 1; i <= n; i++)
  9. 	{
  10. 		ll a, b, c; cin >> a >> b >>c ;
  11.  
  12. 		ll d = 0;
  13. 		if (a == 1) d++;
  14. 		if (b == 1) d++;
  15. 		if (c == 1) d++;
  16.  
  17. 		if (d >= 2) ans++;
  18.  
  19. 	}
  20. 	cout << ans;
  21. }
Success #stdin #stdout 0s 5352KB
comments (?)
stdin
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4
1 1 0
1 0 1
0 0 0
1 1 1
stdout
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3
https://ideone.com/m0iiUh
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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