- import java.util.*; 
- import java.lang.*; 
- import java.io.*; 
-   
- class Ideone 
- { 
- 	{ 
- 		Scanner in  = new-  Scanner (System- . in);
- 		int t1,t2,t3,x,y,z,n; boolean wd=false; 
- 		n = in.nextInt(); 
- 		t1 = in.nextInt(); 
- 		t2 = in.nextInt(); 
- 		t3 = in.nextInt(); 
- 		x = t1; y = x + t2; z = y + t3; 
- 		for (int i = 0; i<n-1; i++){ 
- 					t1 = in.nextInt(); 
- 			t2 = in.nextInt(); 
- 			t3 = in.nextInt(); 
- 			if ((- t1 <0)||(- t2 <0)||(- t3 <0)) {System- . out- . printf("Ошибка");-  wd =true; break;}
 
- 			else {-  x  +=-  t1 ;-  y  = Math- . max(- x, y ) +-  t2 ;-  z  = Math- . max(- y, z ) +-  t3 ;}
 
- 		} 
- 		if (wd == false) { 
- 			System- . out- . printf("Общее время обработки всех деталей = %d"- ,z );}
 
- 	} 
- } 
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