Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:36:58: warning: variable 'fiu_minsus2' set but not used [-Wunused-but-set-variable] int minsus1, minsus2, minjos1, minjos2, fiu_minsus1, fiu_minsus2, fiu_minjos1, fiu_minjos2, dif; ^~~~~~~~~~~ main.cpp:36:84: warning: variable 'fiu_minjos2' set but not used [-Wunused-but-set-variable] int minsus1, minsus2, minjos1, minjos2, fiu_minsus1, fiu_minsus2, fiu_minjos1, fiu_minjos2, dif; ^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:78:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("defrisare.in", "r", stdin); ^ main.cpp:79:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("defrisare.out", "w", stdout); ^ main.cpp:83:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ main.cpp:85:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &h[i]); ^ main.cpp:87:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d", &a, &b, &l); ^ main.cpp: In function 'void dfs(int, int)': main.cpp:67:9: warning: 'fiu_minjos1' may be used uninitialized in this function [-Wmaybe-uninitialized] if (fiu_minsus1 != fiu_minjos1) ^~ main.cpp:67:9: warning: 'fiu_minsus1' may be used uninitialized in this function [-Wmaybe-uninitialized]