Compilare: user.c: In function ‘main’: user.c:94:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &n, &x, &y); ^ user.c:106:5: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(t > y - x + 1){ ^ user.c:121:23: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] rez = 1LL * t * rez % MOD; ^