View Compilation Error

0_0_39353183_16828.cpp: In function 'void solve()':
0_0_39353183_16828.cpp:19:42: error: expected unqualified-id before 'int'
   19 |                         for (int k1 = 1, int k2 = 0; k1 < a[i].size(); k1++)
      |                                          ^~~
0_0_39353183_16828.cpp:19:41: error: expected ';' before 'int'
   19 |                         for (int k1 = 1, int k2 = 0; k1 < a[i].size(); k1++)
      |                                         ^~~~
      |                                         ;
0_0_39353183_16828.cpp:19:70: error: expected ')' before ';' token
   19 |                         for (int k1 = 1, int k2 = 0; k1 < a[i].size(); k1++)
      |                             ~                                        ^
      |                                                                      )
0_0_39353183_16828.cpp:19:72: error: 'k1' was not declared in this scope
   19 |                         for (int k1 = 1, int k2 = 0; k1 < a[i].size(); k1++)
      |                                                                        ^~