Submission #905343

#	Time	Username	Problem	Language	Result	Execution time	Memory
905343		nightfal	The Big Prize (IOI17_prize)	C++14	Compilation error	0 ms	0 KiB

prize

int subtask1(int n){
    int start=0, end=n-1;
    while (start<end) {
        int mid = (start+end)/2;
        vector<int> ans = ask(mid);
        if (!ans[0] && !ans[1]) return mid;
        else if (!ans[0]) start=mid+1;
        else end = mid-1;
    }
    return start;
}

int find_best(int n) {
    return subtask1(n);
	for(int i = 0; i < n; i++) {
		std::vector<int> res = ask(i);
		if(res[0] + res[1] == 0)
			return i;
	}
	return 0;
}

Compilation message (stderr)

prize.cpp: In function 'int subtask1(int)':
prize.cpp:5:9: error: 'vector' was not declared in this scope
    5 |         vector<int> ans = ask(mid);
      |         ^~~~~~
prize.cpp:5:16: error: expected primary-expression before 'int'
    5 |         vector<int> ans = ask(mid);
      |                ^~~
prize.cpp:6:14: error: 'ans' was not declared in this scope
    6 |         if (!ans[0] && !ans[1]) return mid;
      |              ^~~
prize.cpp: In function 'int find_best(int)':
prize.cpp:16:8: error: 'vector' is not a member of 'std'
   16 |   std::vector<int> res = ask(i);
      |        ^~~~~~
prize.cpp:1:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
  +++ |+#include <vector>
    1 | int subtask1(int n){
prize.cpp:16:15: error: expected primary-expression before 'int'
   16 |   std::vector<int> res = ask(i);
      |               ^~~
prize.cpp:17:6: error: 'res' was not declared in this scope
   17 |   if(res[0] + res[1] == 0)
      |      ^~~