Revise paste Untitled

#include <bits/stdc++.h>
using namespace std;
const int maxn = 1005;
int n, m, k;
int mat[maxn][maxn];
int dp[1 << 5][maxn];
int rec(vector<int> rows, int bitmask, int at) {
    if(dp[bitmask][at] != -1) {
        return dp[bitmask][at];
    }
    int res = 0;
    
    for(int i = at + 1; i < m; i++) {
        bool ok = true;
        int sum = 0;
        for(int j = 0; j < rows.size(); j++) {
            if(mat[rows[j]][at] > mat[rows[j]][i]) {
                ok = false;
                break;
            }
            sum += mat[rows[j]][i];
        }
        if(ok) {
            res = max(res, rec(rows, bitmask,  i) + sum);
        }
    }
    return dp[bitmask][at] = res;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin >> n >> m >> k;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            cin >> mat[i][j];
        }
    }
    int res = 0;
    vector<int> v;
    memset(dp, -1, sizeof dp);
    for(int bitmask = 0; bitmask < (1 << n); bitmask++) {
        if(__builtin_popcount(bitmask) == k) {
            vector<int> rows;
            for(int i = 0; i < n; i++) {
                if(bitmask & (1 << i)) {
                    rows.push_back(i);
                }
            }

for(int i = 0; i < m; i++) {
                int sum = 0;
                for(int j = 0; j < rows.size(); j++) {
                    sum += mat[rows[j]][i];
                }
                int tmp_res = rec(rows, bitmask,  i) + sum;
                if(tmp_res > res) {
                    res = tmp_res;
                    v = rows;
                }
                else if(tmp_res == res) {
                    v = min(v, rows);
                }
            }
        }
    }
    cout << res << endl;
    for(int i = 0; i < v.size(); i++) {
        cout << v[i] + 1 << " ";
    }
     
    return 0;
}