Compilare: main.cpp: In function 'int bellman_ford(int)': main.cpp:22:29: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 22 | for (size_t node = 1; node < nodes; node++) | ~~~~~^~~~~~~ main.cpp:33:29: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 33 | for (size_t node = 1; node < nodes; node++) | ~~~~~^~~~~~~ main.cpp: In function 'int main()': main.cpp:70:24: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | for (size_t i = 2; i <= nodes; i++) | ~~^~~~~~~~ main.cpp:62:6: warning: unused variable 'ans' [-Wunused-variable] 62 | int ans = bellman_ford(1); | ^~~ main.cpp: In function 'int bellman_ford(int)': main.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type] 47 | } | ^