Compilare: user.cpp: In function ‘void init(int, int)’: user.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;++i) ^ user.cpp: In function ‘void down(int, int)’: user.cpp:66:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz*2<=l && v[r][heap[poz*2]].val<mn) mn=v[r][heap[poz*2]].val, d=poz*2; ^ user.cpp:67:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz*2+1<=l && v[r][heap[poz*2+1]].val<mn) mn= v[r][heap[poz*2+1]].val, d=poz*2+1; ^ user.cpp: In function ‘void Dijkstra(int, int)’: user.cpp:79:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=1;z<=n;++z) ^ user.cpp:82:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecini[start].size();++i) ^ user.cpp: In function ‘void lant(int, int)’: user.cpp:101:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=v[r][t].len;++j) ^ user.cpp: In function ‘int main()’: user.cpp:113:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=m;++i) ^ user.cpp:124:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;++i) ^