View Compilation Error

0_0_39609715_30395.cpp: In function 'void solve()':
0_0_39609715_30395.cpp:55:24: error: void value not ignored as it ought to be
   55 |             tmp += calc(i, t);
      |                    ~~~~^~~~~~
0_0_39609715_30395.cpp:60:32: error: invalid use of void expression
   60 |             ans = max(ans, calc(i, len));
      |                            ~~~~^~~~~~~~