1089. Insert or Merge.cpp

#include <bits/stdc++.h>
using namespace std;
using gg = long long;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    gg ni;
    cin >> ni;
    vector<gg> v1(ni), v2(ni);
    for (gg& i : v1) {
        cin >> i;
    }
    for (gg& i : v2) {
        cin >> i;
    }
    vector<vector<gg>> inserts, merges;  //存储排序的每趟结果
    vector<gg> v = v1;
    for (gg i = 2; i <= ni; ++i) {  //插入排序
        sort(v.begin(), v.begin() + i);
        inserts.push_back(v);
    }
    v = v1;
    for (gg i = 2; i <= ni; i *= 2) {  //归并排序
        for (gg j = 0; j < ni; j += i) {
            sort(v.begin() + j, v.begin() + min(j + i, ni));
        }
        merges.push_back(v);
    }
    for (gg i = 0; i < inserts.size(); ++i) {  //确认是否是插入排序
        if (inserts[i] == v2) {
            cout << "Insertion Sort\n";
            for (gg j = 0; j < ni; ++j) {
                cout << inserts[i + 1][j] << (j == ni - 1 ? "\n" : " ");
            }
            break;
        }
    }
    for (gg i = 0; i < merges.size(); ++i) {  //确认是否是归并排序
        if (merges[i] == v2) {
            cout << "Merge Sort\n";
            for (gg j = 0; j < ni; ++j) {
                cout << merges[i + 1][j] << (j == ni - 1 ? "\n" : " ");
            }
            break;
        }
    }
    return 0;
}