Compilare: main.cpp: In function 'int main()': main.cpp:23:37: warning: variable 'rez' set but not used [-Wunused-but-set-variable] long long sumst = 0, sumdr = 0, rez = 0, cost; ^~~ main.cpp:42:9: warning: variable 'e1' set but not used [-Wunused-but-set-variable] int e1 = *it; ^~ main.cpp:46:9: warning: variable 'e2' set but not used [-Wunused-but-set-variable] int e2 = *it; ^~ main.cpp:24:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &k); ^ main.cpp:26:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^