Compilare: main.cpp: In function 'void dfs(int)': main.cpp:22:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < g[nod].size(); i++ ) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &t, &n, &m ); ^ main.cpp:67:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &a, &b ); ^ main.cpp:85:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &mk[i].x, &mk[i].y ); ^ main.cpp:114:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &mk[i].x, &mk[i].y ); ^