Compilare: main.c: In function 'Solve': main.c:98:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i%i%i", &n, &m, &q); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:110:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i%i", &node1, &node2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:131:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &k); ^~~~~~~~~~~~~~~ main.c: In function 'main': main.c:163:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("arugaktus.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:164:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("arugaktus.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:167:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^~~~~~~~~~~~~~~