View Compilation Error

0_0_38113195_8263.cpp: In function 'void solve()':
0_0_38113195_8263.cpp:198:57: error: invalid use of 'auto'
   for (auto &x : getTgCC(a, b, 1)) add(x.first, x.second);
                                                         ^
0_0_38113195_8263.cpp:199:57: error: invalid use of 'auto'
   for (auto &x : getTgCC(a, b,-1)) add(x.first, x.second);
                                                         ^