View Compilation Error

0_0_18362756_25352.cpp: In function 'int main()':
0_0_18362756_25352.cpp:65:16: error: 'visit' was not declared in this scope
             if(visit[p[i].second]==false){
                ^
0_0_18362756_25352.cpp:69:16: error: 'visit' was not declared in this scope
             if(visit[p[i].second]&&p[i].first!=0){
                ^