Compilare: user.cpp: In function ‘void solve()’: user.cpp:17:5: warning: unused variable ‘i’ [-Wunused-variable] int i,j,t,workDays,chillDays; ^ user.cpp:17:7: warning: unused variable ‘j’ [-Wunused-variable] int i,j,t,workDays,chillDays; ^ user.cpp:17:9: warning: unused variable ‘t’ [-Wunused-variable] int i,j,t,workDays,chillDays; ^ user.cpp:17:11: warning: unused variable ‘workDays’ [-Wunused-variable] int i,j,t,workDays,chillDays; ^ user.cpp: In function ‘int main()’: user.cpp:77:35: 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:78:37: 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:79:15: 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:18:25: 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:20:42: 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:22:42: 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); ^