Submission #756344

#	Time	Username	Problem	Language	Result	Execution time	Memory
756344		drdilyor	Mechanical Doll (IOI18_doll)	C++17	6 / 100	92 ms	11208 KiB

doll

#include<bits/stdc++.h>
#include "doll.h"
using namespace std;
using ll = long long;

void create_circuit(int m, std::vector<int> arr) {
    vector<int> c(m+1);
    vector<int> x, y;
    auto add = [&](int a, int b){
        x.push_back(a), y.push_back(b);
        return -(int)x.size();
    };

    int n = arr.size();
    vector<vector<int>> nxt(m+1);
    arr.push_back(0);
    for (int i = 0; i < n; i++) {
        nxt[arr[i]].push_back(arr[i+1]);
    }
    for (int i = 1; i <= m; i++) {
        if (nxt[i].empty()) {
            c[i] = 0;
        } else if (nxt[i].size() == 1) {
            c[i] = nxt[i][0];
        } else if (nxt[i].size() == 2) {
            c[i] = add(nxt[i][0], nxt[i][1]);
        } else if (nxt[i].size() == 4) {
            c[i] = add(
                    add(nxt[i][0], nxt[i][1]),
                    add(nxt[i][2], nxt[i][3]));
        } else if (nxt[i].size() == 3) {
            int t1 = add(0, nxt[i][1]);
            int t2 = add(nxt[i][0], nxt[i][2]);
            int t3 = c[i] = add(t1, t2);
            end(x)[-3] = t3;
        }
    }
    c[0] = arr[0];
    answer(c, x, y);
}

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56