短短短短这一块

懒得写注释

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,a1,a2,a3,sum;
    cin>>n;
    while(n--){
        cin>>a1>>a2>>a3;
        sum += min(1,max(0,a1+a2+a3-1));
    }cout<<sum;
    return 0;
}