Compilare: user.cpp: In function ‘int main()’: user.cpp:22:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i + 1 < v.size(); i++) { ~~~~~~^~~~~~~~~~ user.cpp:27:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v.size(); j++) ~~^~~~~~~~~~ user.cpp:27:7: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for (int j = 0; j < v.size(); j++) ^~~ user.cpp:30:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ ans = max(ans, hatz2 - hatz1); ^~~