Ruudukko

#include <bits/stdc++.h>

using namespace std;

int d = 0;
int m = 1000000007;

int vals[1000][1000];
bitset<2000> links[1000][1000];
int chains[1000][1000];
int totalChains = 0;
vector<pair<int, pair<int, int>>> orderTiles;


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    //ifstream f("file.txt");
    
    cin >> d;
    auto start = chrono::system_clock::now();
    
    for (int i = 0; i < d; i++) {
        for (int j = 0; j < d; j++) {
            cin >> vals[i][j];
            orderTiles.push_back({vals[i][j], {i, j}});
            for (int i_2 = 0; i_2 < i; i_2++) {
                if (vals[i_2][j] < vals[i][j]) links[i][j][i_2] = 1;
                else if (vals[i_2][j] > vals[i][j]) links[i_2][j][i] = 1;
            }
            for (int j_2 = 0; j_2 < j; j_2++) {
                if (vals[i][j_2] < vals[i][j]) links[i][j][j_2 + d] = 1;
                else if (vals[i][j_2] > vals[i][j]) links[i][j_2][j + d] = 1;
            }
        }
    }
    
    sort(orderTiles.begin(), orderTiles.end());
    auto a = orderTiles.begin();
    pair<int, pair<int, int>> p;
    bitset<2000> b;
    int chainsFromThis;
    
    for (int i = 0; i < d * d; i++) {
        chainsFromThis = 1;
        p = *a;
        b = links[p.second.first][p.second.second];
        
        for (int j = 0; j < d; j++) {
            if (b[j]) chainsFromThis = (chainsFromThis + chains[j][p.second.second]) % m;
        }
        
        for (int j = 0; j < d; j++) {
            if (b[j + d]) chainsFromThis = (chainsFromThis + chains[p.second.first][j]) % m;
        }
        
        chains[p.second.first][p.second.second] = chainsFromThis % m;
        totalChains = (totalChains + chainsFromThis) % m;
        a++;
    }
    
    cout << totalChains;
    auto stop = chrono::system_clock::now();
    chrono::duration<double> time = stop - start;
    cout << "\ntime: " << time.count();
}

Test 1

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 2

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 3

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 4

Group: 2, 3

Verdict: WRONG ANSWER

Test 5

Group: 2, 3

Verdict: WRONG ANSWER

Test 6

Group: 2, 3

Verdict: WRONG ANSWER

Test 7

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 3

Verdict: TIME LIMIT EXCEEDED