Submission #1225960

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225960		paskalisapo	Swapping Cities (APIO20_swap)	C++20	0 / 100	47 ms	6112 KiB

swap

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

int citiesnum , roadnum;
vector<vector<pair<int,int>>> adj;
int ind1, ind2, ind3;
int w1, w2, w3;
vector<int> wtonode;
bool skip = false;
void init(int N, int M,
    std::vector<int> U, std::vector<int> V, std::vector<int> W) {
    if(N <= 3) {
        skip = true;
        return;
    }
    citiesnum = N;
    roadnum = M;
    priority_queue<pair<int,int>> q;
    wtonode.resize(N , -1);
    for(int i = 0 ;i < M ;i++) {
        if(q.size() < 3) {
            q.push({W[i], V[i]});
        }
        else if(q.top().first > W[i]) {
            q.pop();
            q.push({W[i], V[i]});
        }
        wtonode[V[i]] = W[i];
    }

    ind1 = q.top().second;
    w1 = q.top().first;
    q.pop();
    ind2 = q.top().second;
    w2 = q.top().first;
    q.pop();
    ind3= q.top().second;
    w3 = q.top().first;
    q.pop();
}

int getMinimumFuelCapacity(int X, int Y) {
    if(skip) {
        return -1;
    }
    int other = w3;
    int value1 = wtonode[X];
    int value2 = wtonode[Y];
    if(X == 0) {
        value1 = w3;
        other = w2;
    }
    if(Y == 0) {
        value2 = w3;
        other = w2;
    }
    if(X == ind3 || Y == ind3) {
        other = w2;
        if(X == 0) {
            value1 = w2;
            other = w1;
        }
        if(Y == 0) {
            value2 = w2;
            other = w1;
        }
        if(X == ind2 || Y == ind2) {
            other = w1;
        }
    }
    int answer = max(value1, max(value2, other));
    return answer;
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 23
• Subtask 6: 0 / 27