View Compilation Error

0_0_37843383_29182.cpp: In function 'void slove()':
0_0_37843383_29182.cpp:60:5: error: 'll' was not declared in this scope
     ll ans = 0;
     ^
0_0_37843383_29182.cpp:67:13: error: 'ans' was not declared in this scope
             ans += w;
             ^
0_0_37843383_29182.cpp:74:13: error: 'ans' was not declared in this scope
     cout << ans << endl;
             ^
0_0_37843383_29182.cpp: In function 'int main()':
0_0_37843383_29182.cpp:77:2: error: 'T' was not declared in this scope
  T = read();
  ^
0_0_37843383_29182.cpp:77:11: error: 'read' was not declared in this scope
  T = read();
           ^
0_0_37843383_29182.cpp:78:19: error: 'solve' was not declared in this scope
  while(T--) solve();
                   ^