Submission #1314965

#	Time	Username	Problem	Language	Result	Execution time	Memory
1314965		ninstroyer	Handcrafted Gift (IOI20_gift)	C++20	10 / 100	78 ms	15688 KiB

gift

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

const int nx = 5e5+5;

int l[nx], r[nx], add[nx], sub[nx];
string s;

int construct(int n, int r, std::vector<int> a, std::vector<int> b, std::vector<int> x) {
    for(int i = 0; i < r; i++)
    {
        if(x[i] == 1) add[a[i]]++, sub[b[i]+1]++;
    }
    string cur = "B";
    int sum = 0;
    for(int i = 0; i < n; i++)
    {
        sum += add[i];
        sum -= sub[i];
        s += cur;
        if(sum == 0)
        {
            if(cur == "B") cur = "R";
            else cur = "B";
        }
    }
    craft(s);
    return 1;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 20
• Subtask 4: 0 / 25
• Subtask 5: 0 / 30