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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// No input is there, source 0, cells are 1-30
  6. 	int targets [32];
  7. 	for ( int i = 0; i <= 30; i++  )targets [ i ] = i;
  8.  
  9. 	targets[2] = 21;
  10.     targets[4] = 7;
  11.     targets[10] = 25;
  12.     targets[19] = 28;
  13.     // Snakes
  14.     targets[26] = 0;
  15.     targets[20] = 8;
  16.     targets[16] = 3;
  17.     targets[18] = 6;
  18.  
  19.  
  20. 	//Use BFS to find the minimum moves
  21. 	//While traversing go for moves and skip the snakes cells.
  22. 	vector < bool > vis (32, false);
  23. 	queue < pair < int, int > > qu;
  24. 	qu.push({0, 0});
  25. 	vis [ 0 ] = true;
  26.  
  27. 	while(!qu.empty()){
  28. 		auto cur = qu.front();
  29. 		qu.pop();
  30.  
  31. 		for ( int move = 1; move <= 6; move++ ){
  32. 			int nextPos = cur.first + move;
  33. 			if (nextPos > 30 || vis [ nextPos] )continue;
  34. 			if (targets [ nextPos] > nextPos ) {
  35. 				nextPos = targets [ nextPos ];
  36. 			}
  37. 			if (nextPos == 30 ){
  38. 				cout<<cur.second+1<<"\n";
  39. 				return 0;
  40. 			}
  41. 			vis [ nextPos ] = true;
  42. 			qu.push({nextPos, cur.second + 1});
  43. 		}
  44. 	}
  45.  
  46. 	cout<<"No path found!";
  47. 	return 0;
  48. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/uuab4V
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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