Compilare: main.c: In function 'main': main.c:38:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(fr[i] == -1) ^~ main.c:40:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' long long nr = 0; ^~~~ main.c:15:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &n); ^~~~~~~~~~~~~~~~~~~~~ main.c:18:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^~~~~~~~~~~~~~~~~~~~~~