Compilare: main.cpp: In function 'void read()': main.cpp:27:13: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:29:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' put*=5; ^~~ main.cpp: In function 'void dfs(int)': main.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<graph[i].size(); ++j) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void task1()': main.cpp:51:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] fr[1]=ans=1; ~~~^~