Compilare: main.cpp: In function 'void bellmanFord()': main.cpp:247:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 247 | for(int k = 0; k < nodes.size()-1;k++){ | ~~^~~~~~~~~~~~~~~~ main.cpp:249:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 249 | for(int i = 1; i < nodes.size(); i++){ | ~~^~~~~~~~~~~~~~ main.cpp:261:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 261 | for(int i = 1; i < nodes.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:273:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 273 | for(int i = 2; i < costs.size(); i++){ | ~~^~~~~~~~~~~~~~ main.cpp:246:10: warning: variable 'update' set but not used [-Wunused-but-set-variable] 246 | bool update = true; | ^~~~~~