Compilare: In lambda function, inlined from 'll MinAssignment(const std::vector<std::vector<long long int> >&)' at main.cpp:26:23: main.cpp:21:52: warning: 'w' may be used uninitialized [-Wmaybe-uninitialized] 21 | h=W[p][j]-W[p][q]+v[q]-v[j]+w; if(h<dist[j]) { main.cpp: In function 'll MinAssignment(const std::vector<std::vector<long long int> >&)': main.cpp:15:12: note: 'w' was declared here 15 | ll w, h; int j, l, s, t; auto reduce=[&]() { if(s==t) { | ^ main.cpp:15:25: warning: 'l' may be used uninitialized [-Wmaybe-uninitialized] 15 | ll w, h; int j, l, s, t; auto reduce=[&]() { if(s==t) { | ^