Compilare: main.c: In function 'main': main.c:15:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^~~~~~~~~~~~~~~~~~~~~ main.c:17:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &v[i][0]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:38:30: warning: 'nrsolmax' may be used uninitialized in this function [-Wmaybe-uninitialized] nrsolmax = (nrsolmax + nrsol[i]) % MOD; ~~~~~~~~~~^~~~~~~~~~~