Compilare: user.cpp: In function ‘int main()’: user.cpp:28:25: warning: conversion lacks type at end of format [-Wformat=] fscanf(in, "%ll", nr+i); ^ user.cpp:28:25: warning: too many arguments for format [-Wformat-extra-args] user.cpp:49:27: warning: unknown conversion type character 0xa in format [-Wformat=] fprintf(out, "%ll\n", ans); ^ user.cpp:49:27: warning: too many arguments for format [-Wformat-extra-args] user.cpp:18:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &n, &m); ^ user.cpp:28:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%ll", nr+i); ^