Compilare: main.cpp: In member function 'bool Query::operator<(const Query&) const': main.cpp:50:61: warning: comparison of constant '250' with boolean expression is always true [-Wbool-compare] if(l / BLOCK != aux.l / BLOCK) return l / BLOCK < aux.l < BLOCK; ~~~~~~~~~~~~~~~~~~^~~~~~~ main.cpp:50:53: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses] if(l / BLOCK != aux.l / BLOCK) return l / BLOCK < aux.l < BLOCK; ~~~~~~~~~~^~~~~~~ main.cpp: In function 'int main()': main.cpp:98:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("infinitywar.in", "r", stdin); ^ main.cpp:99:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("infinitywar.out", "w", stdout); ^ main.cpp:100:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &q); ^ main.cpp:104:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:107:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ main.cpp:114:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^