View Compilation Error

0_0_35302570_22607.cpp:6:7: error: 'LL' does not name a type
 const LL inf = 1LL<<50;
       ^
0_0_35302570_22607.cpp: In function 'void solve()':
0_0_35302570_22607.cpp:15:14: error: 'inf' was not declared in this scope
    dp[i][j]=-inf;
              ^
0_0_35302570_22607.cpp:39:10: error: 'inf' was not declared in this scope
  ll ans=-inf;
          ^