#include <iostream>

using namespace std;

int grid[20][5];
int t, t_no = 1, n, score = -9999999;

bool valid(int pos, int height) {
  return (pos >= 0 && pos < 5 && height >= 0 && height < n);
}

void bombing(int pos, int height, int trigger, int range, int curScore) {
  if(!valid(pos, height)) {
    if(score < curScore) score = curScore;
    return;
  }
  
  // if bomb is used
  if(trigger == 1) {
    if(range <= 0) {
      if(score < curScore) score = curScore;
      return;
    }
    else {
      for(int i = -1; i <= 1; i++) {
        if(grid[height][pos] == 1) {
          // curScore += 1;
          // score = max(curScore, score);
          bombing(pos+i, height+1, trigger, range-1, curScore+1);
        }
        else bombing(pos+i, height+1, trigger, range-1, curScore);
      }
    }
  }
  
  // if bomb is not used
  else if(trigger == 0) {
    for(int i = -1; i <= 1; i++) {
      if(grid[height][pos] == 1) {
        // curScore += 1;
        // score = max(score, curScore);
        bombing(pos+i, height+1, trigger, range, curScore+1);
      }
      else if(grid[height][pos] == 0) bombing(pos+i, height+1, trigger, range, curScore);
      else if(grid[height][pos] == 2) bombing(pos+i, height+1, 1, range-1, curScore);
    }
  }
}

int main() {
  cin>>t;
  while(t--) {
    cin>>n;
    
    score = -9999999;
    // initializing grid with 0s
    for(int i = 0; i < n; i++) {
      for(int j = 0; j < 5; j++) {
        grid[i][j] = 0;
      }
    }
    
    // take input
    for(int i = 0; i < n; i++) {
      for(int j = 0; j < 5; j++) {
        cin>>grid[i][j];
      }
    }
    
    for(int i = -1; i <= 1; i++) {
      bombing(2+i, 0, 0, 5, 0);
    }
    
    cout<<"#"<<t_no++<<" "<<score<<endl;
  }
  return 0;
}

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}