Compilare: main.cpp: In function 'int main()': main.cpp:40:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 2; i <= n; i++) ^~~ main.cpp:62:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int i = 1; i <= n; i++) ^~~ main.cpp:81:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < ans2[i].size(); j++) ~~^~~~~~~~~~~~~~~~