Compilare: user.cpp: In function ‘int main()’: user.cpp:148:34: warning: operation on ‘k’ may be undefined [-Wsequence-point] st[++k]=G[st[k-1]][0]; ^ user.cpp:89:22: warning: ‘rezy’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m*(lin-1)+col; ^ user.cpp:115:14: note: ‘rezy’ was declared here int rezx,rezy,minm=inf; ^ user.cpp:89:18: warning: ‘rezx’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m*(lin-1)+col; ^ user.cpp:115:9: note: ‘rezx’ was declared here int rezx,rezy,minm=inf; ^