Compilare: user.cpp:8:21: warning: integer constant is too large for its type [enabled by default] long long last=-INF; ^ user.cpp: In function ‘int main()’: user.cpp:23:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:25:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%lld%lld", &n, &m, &a, &b, &c); ^