Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:32:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<coord>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i=0;i<v[val].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int solve()': main.cpp:48:21: warning: iteration 100004 invokes undefined behavior [-Waggressive-loop-optimizations] 48 | frev[i] = 0; | ~~~~~~~~^~~ main.cpp:47:22: note: within this loop 47 | for(int i=1;i<=100005;i++) | ~^~~~~~~~ main.cpp:48:21: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 100005 is out of the bounds [0, 100005] of object 'frev' with type 'bool [100005]' [-Warray-bounds] 48 | frev[i] = 0; | ~~~~~~~~^~~ main.cpp:16:6: note: 'frev' declared here 16 | bool frev[100005]; | ^~~~