Compilare: main.cpp: In function 'void divide(int, int, int, int)': main.cpp:37:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int mid = st + dr >> 1; ~~~^~~~ main.cpp: In function 'int main()': main.cpp:101:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &n, &l, &q); ^ main.cpp:103:63: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d", &e[i].a, &e[i].b, &e[i].c, &e[i].r); ^ main.cpp:107:71: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d%d", &que[i].u, &que[i].v, &que[i].a, &que[i].b); ^