Compilare: main.cpp: In function 'int main()': main.cpp:381:14: warning: unused variable 'b' [-Wunused-variable] long long b = dp[i - 1][id] - 1LL * v[st[len]] * id; ^ main.cpp:382:14: warning: unused variable 'a' [-Wunused-variable] long long a = v[st[len]]; ^ main.cpp:351:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&k); ^ main.cpp:354:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^