Compilare: user.cpp: In function ‘void bellman_ford()’: user.cpp:68:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[ c[p] ].size(); i ++) ^ user.cpp: In function ‘int check(int)’: user.cpp:109:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[ c[p] ].size(); i ++) ^ user.cpp:111:71: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(D[ L[ c[p] ][i].dist ] > D[ c[p] ] + L[ c[p] ][i].timp && (Cost[ c[p] ] + L[ c[p] ][i].cost <= middle) ^ user.cpp: In function ‘void solve()’: user.cpp:160:22: warning: ‘middle’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << middle - 1; ^