Compilare: user.cpp: In function ‘void precalculate(int)’: user.cpp:27:79: warning: variable ‘l’ set but not used [-Wunused-but-set-variable] map <long long,int> mp; int i,j,k; long long uhash=0,prevhash=0,p1=1,p2=1,l=1; ^ user.cpp: In function ‘int main()’: user.cpp:67:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poze.in","r",stdin); ^ user.cpp:68:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poze.out","w",stdout); ^ user.cpp:69:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nr); ^ user.cpp:71:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&val); ^ user.cpp:74:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t[i][j]),t[i][j]++; ^