Compilare: user.cpp:5:20: warning: narrowing conversion of ‘-1’ from ‘int’ to ‘bool’ inside { } [-Wnarrowing] bool dl[]={1,0,-1,0},dc[]={0,1,0,-1}; ^ user.cpp:5:36: warning: narrowing conversion of ‘-1’ from ‘int’ to ‘bool’ inside { } [-Wnarrowing] bool dl[]={1,0,-1,0},dc[]={0,1,0,-1}; ^ user.cpp: In function ‘int main()’: user.cpp:19:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vis.in","r",stdin); ^ user.cpp:20:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("vis.out","w",stdout); ^ user.cpp:21:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d",&n,&k1,&k2,&l1,&cl1,&l2,&cl2); ^ user.cpp:24:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^