Submission #1075776

#	Time	Username	Problem	Language	Result	Execution time	Memory
1075776		mdn2002	The Big Prize (IOI17_prize)	C++17	0 / 100	54 ms	344 KiB

prize

#include "prize.h"
#include<bits/stdc++.h>
using namespace std;

int find_best(int n) {
	int mx = 0, lim = 500, mxleft = 0;
	for (int i = 0; i < min(n, lim); i ++) {
        vector<int> a = ask(i);
        mx = max(mx, a[0] + a[1]);
        mxleft = max(mxleft, a[0]);
        if (a[0] + a[1] == 0) return i;
	}

	for (int i = 0; i < n; i ++) {
        vector<int> a = ask(i);
        int num = mxleft - a[1], logg = log2(num) + 1;
        if (a[0] + a[1] == mx) {
            for (int j = (1 << logg); j >= 1; j /= 2) {
                if (i + j >= n) continue;
                vector<int> b = ask(i + j);
                if (a[1] == b[1]) i += j;
            }
        }
        else if (a[0] + a[1] == 0) return i;
	}
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type]
   26 | }
      | ^

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