Submission #1330216

#	Time	Username	Problem	Language	Result	Execution time	Memory
1330216		bradley0927	Grid Coloring (JOI25_ho_t1)	C++20	Compilation error	0 ms	0 KiB

Main

#include <iostream>
#include <vector>
using namespace std;
int main() {
    int n;
    cin >> n;
    vector<int> mp(2*n), a(n), b(n);
    vector<vector<int>> grid(n, vector<int>(n));//grid is mapped
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        mp[i] = a[i];
    }
    for (int i = 0; i < n; i++) {
        cin >> b[i];
        mp[i+n] = b[i];
    }
    sort(mp.begin(), mp.end());
    mp.erase(unique(mp.begin(), mp.end()), mp.end());
    vector<int> count(mp.size(), 0);
    int max_cnt = 0, max_idx = 0;
    for (int i = 0; i < n; i++) {
        grid[i][0] = lower_bound(mp.begin(), mp.end(), a[i]) - mp.begin();
        grid[0][i] = lower_bound(mp.begin(), mp.end(), b[i]) - mp.begin();
        count[grid[i][0]]++;
        count[grid[0][i]]++;
    }
    count[grid[0][0]]--;//avoid double counting
    for (int i = 1; i < n; i++) {
        for (int j = 1; j < n; j++) {
            grid[i][j] = max(grid[i-1][j], grid[i][j-1]);
            count[grid[i][j]]++;
            if (count[grid[i][j]] > max_cnt) {
                max_cnt = count[grid[i][j]];
                max_idx = grid[i][j];
            } else if (count[grid[i][j]] == max_cnt) {
                max_idx = max(max_idx, grid[i][j]);//choose color with larger index
            }
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << grid[i][j] << " ";
        }
        cout << endl;
    }
    for (int i = 0; i < n; i++) {
        cout << count[i] << " ";
    }
    cout << endl;
    cout << mp[max_idx] << " " << max_cnt << endl;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:17:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   17 |     sort(mp.begin(), mp.end());
      |     ^~~~
      |     short
Main.cpp:18:14: error: 'unique' was not declared in this scope
   18 |     mp.erase(unique(mp.begin(), mp.end()), mp.end());
      |              ^~~~~~