- #include <iostream> 
- using namespace std; 
-   
- int main() { 
- 	int t1,t2,t3,x,y,z,n; bool wd=false; 
- 	cin>>n; 
- 	cin>>t1>>t2>>t3; 
- 	x = t1; y = x + t2; z = y + t3; 
- 	for (int i = 0; i<n-1; i++){ 
- 		cin>>t1>>t2>>t3; 
- 		if ((t1<0)||(t2<0)||(t3<0)) {cout<<"Ошибка"; wd=true; break;} 
- 		else { x += t1; y = max(x, y) + t2; z = max(y, z) + t3;} 
- 	} 
- 	if (wd == false) { 
- 		cout<<"Общее время обработки всех деталей = "<<z;} 
- } 
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