Submission #584443

#	Time	Username	Problem	Language	Result	Execution time	Memory
584443		PiejanVDC	The Big Prize (IOI17_prize)	C++17	20 / 100	80 ms	296 KiB

prize

#include <bits/stdc++.h>
#include "prize.h"
 
using namespace std;
 
int mn = INT_MAX;
int le = 0, ri;
 
int s(int l, int r) {
 
    if(l < le || r > ri) {
        if(max(l, le) > min(r, ri))
            return -1;
        return s(max(l, le), min(r, ri));
    }
 
    int mid = (l+r)/2;
    vector<int>gt = ask(mid);
 
    if(gt[0]+gt[1] <= mn) {
        mn = gt[0]+gt[1];
        if(gt[0] == 0)
            le = max(le, mid+1);
        if(!gt[1])
            ri = min(ri, mid-1);
    }
    if(!gt[0] && !gt[1])
        return mid;
    if(l == r)
        return -1;
    int a = -1, b = -1;
    if(gt[0] && l < mid)
        a = s(l, mid-1);
    if(gt[1] && r > mid)
        b = s(mid+1, r);
    return max(a,b);
}
 
int find_best(int n) {
    ri = n-1;
    return s(0,n-1);
}

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