Compilare: user.cpp: In function ‘int main()’: user.cpp:51:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bacterii2.in", "r", stdin); ^ user.cpp:52:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bacterii2.out", "w", stdout); ^ user.cpp:55:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:59:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &na);gra = 0;for(int i=1; i<=na; i++){scanf("%d", &x); vfa[x]++;if(x>gra) gra=x;} ^ user.cpp:59:74: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &na);gra = 0;for(int i=1; i<=na; i++){scanf("%d", &x); vfa[x]++;if(x>gra) gra=x;} ^ user.cpp:60:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nb);grb = 0;for(int i=1; i<=nb; i++){scanf("%d", &x); vfb[x]++;if(x>grb) grb=x;} ^ user.cpp:60:74: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nb);grb = 0;for(int i=1; i<=nb; i++){scanf("%d", &x); vfb[x]++;if(x>grb) grb=x;} ^