View Compilation Error

0_0_33363654_12685.cpp: In member function 'int MaxFlow::dfs(int, int, int)':
0_0_33363654_12685.cpp:54:16: error: 'minn1' was not declared in this scope
   if(s == t || minn1 == 0) return min1;//当已经到达汇点，直接返回
                ^