Submission #836891

#	Time	Username	Problem	Language	Result	Execution time	Memory
836891		ma_moutahid	Distributing Candies (IOI21_candies)	C++17	0 / 100	75 ms	23764 KiB

candies

#include "candies.h"
#include  <bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define vii vector<vi>
using ll=long long;
#define vl vector<long long>

ll np(int n){
    while(n & (n-1))n++;
    return n;
}

vl segtree;

void update(ll pos, ll l, ll r, ll x, ll y, ll value){
    if(y<l)return;
    if(x>r)return;
    if(x>=l && y<=r){
        segtree[pos]+=value;

        return;
    }
    update(pos*2,l,(l+r)/2,x,y,value);
    update(pos*2+1,(l+r)+1,r,x,y,value);
}


std::vector<int> distribute_candies(std::vector<int> c, std::vector<int> l,
                                    std::vector<int> r, std::vector<int> v) {
    int n = c.size();
    int q=l.size();
    int N=np(n);
    segtree.resize(N);
    std::vector<int> s(n);
    for(int i=0;i<q;i++){
        int x=l[i];
        int y=r[i];
        update(1,0,N-1,x,y,v[i]);
    }
    for(int i=1;i<N;i++){
        segtree[2*i]+=segtree[i];
        segtree[2*i+1]+=segtree[i];
    }
    for(int i=0;i<n;i++){
        s[i]=segtree[N+i];
    }
    return s;
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 8
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 33