Submission #1284704

#	Time	Username	Problem	Language	Result	Execution time	Memory
1284704		mariaclara	The Big Prize (IOI17_prize)	C++17	97.41 / 100	14 ms	404 KiB

prize

#include "prize.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mk make_pair
#define pb push_back
#define fr first
#define sc second

int max_loli;

int query(int l, int r, int pl, int pr) {
    int ml = (l+r)/2 - 1, mr = ml + 1, pml = pr, pmr = -1;

    while(mr <= r) {
        vi rsp = ask(mr);

        if(rsp[0] + rsp[1] == max_loli) {
            pml = rsp[0] - (mr - ml - 1);
            pmr = rsp[0];
            mr++;
            break;
        }

        if(rsp[0] + rsp[1] == 0) return mr;
        mr++; pml--;
    }

    int ret = -1;
    if(pl < pml and l <= ml) ret = query(l, ml, pl, pml);
    if(pmr < pr and mr <= r and ret == -1) ret = query(mr, r, pmr, pr);

    return ret;
}

int find_best(int N) {
    int i = 0, qtd = 0;

    for(; i < min(500, N); i++) {
        vi rsp = ask(i);
        if(rsp[0] + rsp[1] > max_loli){
            max_loli = rsp[0] + rsp[1];
            qtd = i;
        }
        if(rsp[0] + rsp[1] < max_loli) qtd++;
        if(rsp[0] + rsp[1] == 0) return i;
    }

    return query(i, N-1, qtd, max_loli);
}

• Subtask 1: 20 / 20
• Subtask 2: 77.41 / 80