Submission #1124365

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124365		math_rabbit_1028	Hieroglyphs (IOI24_hieroglyphs)	C++20	3 / 100	31 ms	5504 KiB

hieroglyphs

#include "hieroglyphs.h"
using namespace std;

vector<int> solve(vector<int> A, vector<int> B) {
    int N = (int)A.size();
    int M = (int)B.size();

    vector<int> cntA(202020, 0), cntB(202020, 0), ret;
    
    int p = 0;
    for (int i = 0; i < N; i++) {
        cntA[A[i]]++;
    }
    for (int i = 0; i < M; i++) {
        cntB[B[i]]++;
    }
    for (int i = 0; i < N; i++) {
        if (cntB[A[i]] == 0) continue;
        while (true) {
            if (B[p] == A[i]) {
                p++;
                ret.push_back(A[i]);
                cntA[A[i]]--;
                cntB[A[i]]--;
                break;
            }
            p++;
            if (p == M) return vector<int>(1, -1);
        }
    }
    return ret;
}

vector<int> check(vector<int> V, vector<int> U) {
    if (V.size() > U.size()) swap(V, U);
    // V.size() <= U.size()

    int p = 0;
    for (int i = 0; i < V.size(); i++) {
        while (true) {
            if (p == U.size()) return vector<int>(1, -1);
            if (V[i] == U[p]) {
                p++;
                break;
            }
            p++;
        }
    }
    return U;
}

vector<int> ucs(vector<int> A, vector<int> B) {
    vector<int> V = solve(A, B);
    vector<int> U = solve(B, A);

    if (V.size() == 1 && V[0] == -1) return vector<int>(1, -1);
    if (U.size() == 1 && U[0] == -1) return vector<int>(1, -1);

    return check(V, U);
}

• Subtask 0: 0 / 0
• Subtask 1: 3 / 3
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 16
• Subtask 5: 0 / 14
• Subtask 6: 0 / 42