Submission #905346

#	Time	Username	Problem	Language	Result	Execution time	Memory
905346		nightfal	The Big Prize (IOI17_prize)	C++14	20 / 100	1 ms	596 KiB

prize

//#include "prize.h"
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

static const int max_q = 10000;
static int n;
static int query_count = 0;
static vector<int> g;
static vector<vector<int> > rank_count;

int find_best(int n);
std::vector<int> ask(int i);

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:10:12: warning: 'query_count' defined but not used [-Wunused-variable]
   10 | static int query_count = 0;
      |            ^~~~~~~~~~~
prize.cpp:9:12: warning: 'n' defined but not used [-Wunused-variable]
    9 | static int n;
      |            ^

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80