/in/foo.cc:40:23: error: 'K1' was not declared in this scope; did you mean 'y1'?
   40 | int n, N, ans, S, L = K1 = 0, K, arr[maxN], f[maxM] = { 0 }, T[maxN] = { 0 }, tot[maxM << 1] = { 0 };
      |                       ^~
      |                       y1
/in/foo.cc: In function 'int main()':
/in/foo.cc:47:9: error: 'arr' was not declared in this scope
   47 |         arr[i] = read();
      |         ^~~
/in/foo.cc:55:29: error: 'arr' was not declared in this scope
   55 |         for (int j = L; j > arr[i]; j--)
      |                             ^~~
/in/foo.cc:56:13: error: 'f' was not declared in this scope
   56 |             f[j] = max(f[j], f[j - arr[i]]);
      |             ^
/in/foo.cc:58:9: error: 'f' was not declared in this scope
   58 |         f[arr[i]] = max(f[arr[i]], i);
      |         ^
/in/foo.cc:58:11: error: 'arr' was not declared in this scope
   58 |         f[arr[i]] = max(f[arr[i]], i);
      |           ^~~
/in/foo.cc:70:5: error: 'K' was not declared in this scope
   70 |     K = L - arr[ans];
      |     ^
/in/foo.cc:70:13: error: 'arr' was not declared in this scope
   70 |     K = L - arr[ans];
      |             ^~~
/in/foo.cc:74:13: error: 'K1' was not declared in this scope; did you mean 'y1'?
   74 |             K1 += arr[i];
      |             ^~
      |             y1