Compilare: main.cpp: In function 'long long int divide_et_impera(int, int)': main.cpp:67:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0; i<selectedpointsno - 1; ++i) ^~~ main.cpp:71:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return current_res; ^~~~~~ main.cpp: In function 'int main()': main.cpp:76:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.in", "r", stdin); ^ main.cpp:77:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmap.out", "w", stdout); ^ main.cpp:80:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:84:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld", &points[i].x, &points[i].y); ^