Compilare: main.cpp: In function 'int binarySearch(int, vi&)': main.cpp:69:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int m = l + r >> 1; ~~^~~ main.cpp: In function 'void divide(int, int)': main.cpp:116:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int mid = st + dr >> 1; ~~~^~~~ main.cpp: In function 'int main()': main.cpp:13:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:141:9: note: in expansion of macro 'FO' FO(cmap); ^~ main.cpp:13:71: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FO(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);} ^ main.cpp:141:9: note: in expansion of macro 'FO' FO(cmap); ^~ main.cpp:151:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:154:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[i].x, &v[i].y); ^