Compilare: user.cpp: In function ‘void Solve(int, int, int, int, int, int, int)’: user.cpp:19:9: warning: variable ‘X3’ set but not used [-Wunused-but-set-variable] int X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,X16; ^ user.cpp:19:46: warning: variable ‘X14’ set but not used [-Wunused-but-set-variable] int X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,X16; ^ user.cpp:20:15: warning: variable ‘Y5’ set but not used [-Wunused-but-set-variable] int Y3,Y4,Y5,Y6,Y7,Y8,Y9,Y10,Y11,Y12,Y13,Y14,Y15,Y16; ^ user.cpp:20:18: warning: variable ‘Y6’ set but not used [-Wunused-but-set-variable] int Y3,Y4,Y5,Y6,Y7,Y8,Y9,Y10,Y11,Y12,Y13,Y14,Y15,Y16; ^ user.cpp: In function ‘int main()’: user.cpp:68:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pav.in","r",stdin); ^ user.cpp:69:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pav.out","w",stdout); ^ user.cpp:70:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&N,&i,&j); L=1<<N; ^