Compilare: user.cpp: In function ‘bool bellman(int, int)’: user.cpp:18:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, fiu, nod, cost_muhcie; ^ user.cpp:18:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, fiu, nod, cost_muhcie; ^ user.cpp: In function ‘int main()’: user.cpp:58:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, x, y, c, s, st, dr; ^ user.cpp:58:30: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, x, y, c, s, st, dr; ^ user.cpp:55:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in","r",stdin); ^ user.cpp:56:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.out","w",stdout); ^ user.cpp:62:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:64:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&c); ^ user.cpp:83:17: warning: ‘cost’ may be used uninitialized in this function [-Wmaybe-uninitialized] cost /= 1000; ^