Compilare: user.cpp: In function ‘void solve()’: user.cpp:20:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, t, workDays, chillDays; ^ user.cpp:20:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, t, workDays, chillDays; ^ user.cpp:20:15: warning: unused variable ‘t’ [-Wunused-variable] int i, j, t, workDays, chillDays; ^ user.cpp:20:18: warning: unused variable ‘workDays’ [-Wunused-variable] int i, j, t, workDays, chillDays; ^ user.cpp: In function ‘int main()’: user.cpp:99:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("provacanta.in","r",stdin); ^ user.cpp:100:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("provacanta.out","w",stdout); ^ user.cpp:102:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp: In function ‘void solve()’: user.cpp:21:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&k); ^ user.cpp:23:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &project[i].x, &project[i].y); ^ user.cpp:25:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &holiday[i].x, &holiday[i].y); ^