Compilare: main.cpp: In function 'int main()': main.cpp:20:10: warning: unused variable 'j' [-Wunused-variable] ll n,k,i,j; ^ main.cpp: In function 'int calc(long long int, long long int, long long int, long long int, long long int)': main.cpp:16:31: warning: control reaches end of non-void function [-Wreturn-type] calc(i,mij+1,dr,nr[i][mij],y);} ^ main.cpp: In function 'int main()': main.cpp:18:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bisuma.in","r",stdin); ^ main.cpp:19:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bisuma.out","w",stdout); ^ main.cpp:21:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&n,&k); ^ main.cpp:23:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&a[i]); ^ main.cpp:25:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&b[i]); ^