Compilare: user.cpp: In function ‘void process()’: user.cpp:63:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v.size()>1) f(i,v.size()-1) printf(" %d",v[i]); ^ user.cpp:2:31: note: in definition of macro ‘f’ #define f(i,n) for(int i=1;i<=n;i++) ^ user.cpp: In function ‘void init()’: user.cpp:55:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&R,&C); ^ user.cpp:56:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] f(i,R) f(j,C) scanf("%d",&g[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:68:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.in","r",stdin); ^ user.cpp:69:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.out","w",stdout); ^ user.cpp: In function ‘void minPath(int, int, int, int)’: user.cpp:47:19: warning: ‘pozy’ may be used uninitialized in this function [-Wmaybe-uninitialized] l[g[pozx][pozy]]=1; ^ user.cpp:47:19: warning: ‘pozx’ may be used uninitialized in this function [-Wmaybe-uninitialized]