Compilare: user.cpp: In function ‘bool dijkstra()’: user.cpp:37:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[act].size(); i ++) { ^ user.cpp: In function ‘bool bellmanFord()’: user.cpp:83:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[act].size(); i ++) { ^ user.cpp: In function ‘int main()’: user.cpp:110:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d", &n, &m, &s, &d); ^ user.cpp:112:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &x, &y); ^ user.cpp:113:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &c[x][y], &cost[x][y]); ^