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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define pb push_back
  4.  
  5. int main()
  6. {
  7.     int n;
  8.     cin>>n;
  9.     char x;
  10.     string v[n];
  11.     for(int i=0;i<n;i++)
  12.     {
  13.         for(int j=0;j<n;j++)
  14.         {
  15.             cin>>x;
  16.         v[i][j]=x;
  17.         }
  18.     //  v.pb(s);
  19.     }
  20.     vector<vector<int>>dp(n,vector<int>(n,0));
  21.     dp[0][0]=v[0][0]=='#'?0:1;
  22.     int rows=n;
  23.     int cols=n;
  24.     for(int i=1;i<rows;i++)
  25.         {
  26.             if(v[i][0]=='#')
  27.             {
  28.                 dp[i][0]=0;
  29.             }
  30.             else
  31.             {
  32.                 dp[i][0]=dp[i-1][0];
  33.             }
  34.         }
  35.          for(int i=1;i<cols;i++)
  36.         {
  37.             if(v[0][i]=='#')
  38.             {
  39.                 dp[0][i]=0;
  40.             }
  41.             else
  42.             {
  43.                 dp[0][i]=dp[0][i-1];
  44.             }
  45.         }
  46.         for(int i=1;i<rows;i++)
  47.         {
  48.             for(int j=1;j<cols;j++)
  49.             {
  50.                 if(v[i][j]=='#')
  51.                 {
  52.                     dp[i][j]=0;
  53.                 }
  54.                 else
  55.                 {
  56.  
  57.                     dp[i][j]=dp[i-1][j]+dp[i][j-1];
  58.                 }
  59.             }
  60.         }
  61.         if(dp[rows-1][cols-1])
  62.         {
  63.             cout<<dp[rows-1][cols-1];
  64.  
  65.         }
  66.         else
  67.         {
  68.             queue<pair<int,int>> q;
  69.             q.push({0,0});
  70.             int flag=0;
  71.             while(!q.empty())
  72.             {
  73.                 pair<int,int> temp=q.front();
  74.                 q.pop();
  75.                 if(temp.first==n-1 && temp.second==n-1)
  76.                 {
  77.                     cout<<"The game is a lie"<<endl;
  78.                     flag=1;
  79.                 }
  80.                 int x=temp.first;
  81.                 int y=temp.second;
  82.                 cout<<x<<y<<endl;
  83.                 if(x-1>=0 && x-1<n)
  84.                 {
  85.                     q.push({x-1,y});
  86.                 }
  87.                 else if(x+1>=0 && x+1<n)
  88.                 {
  89.                     q.push({x+1,y});
  90.                 }
  91.                 else if(y+1>0 && y+1<n)
  92.                 {
  93.                     q.push({x,y+1});
  94.                 }
  95.                 else if(y-1>0 && y-1<n)
  96.                 {
  97.                     q.push({x,y-1});
  98.                 }
  99.             }
  100.             if(!flag)
  101.             {
  102.                 cout<<"ayy lmaoo"<<endl;
  103.             }
  104.  
  105.         }
  106. }
Runtime error #stdin #stdout 0.03s 15232KB
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1
https://ideone.com/XzYrAv
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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