Submission #798522

#	Time	Username	Problem	Language	Result	Execution time	Memory
798522		PoonYaPat	The Potion of Great Power (CEOI20_potion)	C++14	0 / 100	239 ms	41468 KiB

potion

#include <bits/stdc++.h>
using namespace std;
typedef pair<int,vector<int>> piv;

int n,h[100005];
vector<piv> v[100005];

void add(int x, int y, int t) { //add y to x
    vector<int> temp;
    bool f=false;
    for (auto s : v[x].back().second) {
        if (s<h[y]) temp.push_back(s);
        else {
            if (!f) {
                if (s!=h[y]) {
                    temp.push_back(h[y]);
                    temp.push_back(s);
                }
                f=true;
            } else {
                temp.push_back(s);
            }
        }
    }
    if (!f) temp.push_back(h[y]);
    v[x].push_back(piv(t,temp));
}

void init(int N, int D, int H[]) {
    n=N;
    for (int i=0; i<n; ++i) h[i]=H[i], v[i].push_back(piv(0,{}));
}

void curseChanges(int U, int A[], int B[]) {
    for (int i=0; i<U; ++i) {
        add(A[i],B[i],i+1);
        add(B[i],A[i],i+1);
    }
}

int question(int x, int y, int day) {
    int hx=upper_bound(v[x].begin(),v[x].end(),piv(day+1,{}))-v[x].begin()-1;
    int hy=upper_bound(v[y].begin(),v[y].end(),piv(day+1,{}))-v[y].begin()-1;
    int xi=0, yi=0, nx=v[x][hx].second.size(), ny=v[y][hy].second.size();

    if (!nx || !ny) return 1e9;
    else {
        int ans=INT_MAX;
        while (xi<nx && yi<ny) {
            ans=min(ans,abs(v[x][hx].second[xi]-v[y][hy].second[yi]));
            if (xi>yi) ++yi;
            else ++xi;
        }
        return ans;
    }
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 17
• Subtask 3: 0 / 14
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 30