Compilare: main.cpp: In function 'int main()': main.cpp:74:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[i].size(); j++) ~~^~~~~~~~~~~~~ main.cpp:74:8: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (int j = 0; j < v[i].size(); j++) ^~~ main.cpp:76:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout <<"\n"; ^~~~