Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:42:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < l[x].size(); ++i) { ^ user.cpp: In function ‘int drum(int, int)’: user.cpp:56:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, p, val = inf, y; ^ user.cpp:56:15: warning: unused variable ‘p’ [-Wunused-variable] int i, j, p, val = inf, y; ^ user.cpp:56:29: warning: unused variable ‘y’ [-Wunused-variable] int i, j, p, val = inf, y; ^ user.cpp: In function ‘int main()’: user.cpp:74:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, m, x, y, mini = inf; ^ user.cpp:76:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &m); ^ user.cpp:77:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &k); ^ user.cpp:79:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp:82:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &x, &y, &aux.c); ^