oj.uz

Submission #1058879

# Submission time Handle Problem Language Result Execution time Memory
1058879 2024-08-14T14:41:10 Z Thanhs Kutije (COCI21_kutije) C++14
70 / 70
 117 ms 9556 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define int long long
// #define double long double
 
#define endl '\n'
#define fastIO ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define setmin(x, y) x = min((x), (y))
#define setmax(x, y) x = max((x), (y))
#define sqr(x) ((x) * (x))
#define fi first
#define se second
#define all(x) x.begin(), x.end()
 
// mt19937 hdp(chrono::high_resolution_clock::now().time_since_epoch().count());
// int rand(int l, int r){return l + ((hdp() % (r - l + 1)) + r - l + 1) % (r - l + 1);}

const int NM = 1e3 + 5;
const int inf = 1e9;

int p[NM], n, m, q;

int find(int u) {return p[u] < 0 ? u : p[u] = find(p[u]);}
void join(int u, int v)
{
    u = find(u), v = find(v);
    if (u == v)
        return;
    if (p[u] > p[v])
        swap(u, v);
    p[u] += p[v];
    p[v] = u;
}

void solve()
{
    memset(p, -1, sizeof p);
    cin >> n >> m >> q;
    while (m--)
    {
        for (int i = 1; i <= n; i++)
        {
            int j;
            cin >> j;
            join(i, j);
        }
    }
    while (q--)
    {
        int u, v;
        cin >> u >> v;
        cout << (find(u) == find(v) ? "DA" : "NE") << endl;
    }
}

signed main()
{
    fastIO
    if (fopen("in.txt", "r")) 
    {
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    }
    int tc = 1;
    // cin >> tc;
    while (tc--)
        solve();
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen("in.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen("out.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 5716 KB Output is correct
2 Correct 41 ms 4948 KB Output is correct
3 Correct 39 ms 4692 KB Output is correct
4 Correct 46 ms 5716 KB Output is correct
5 Correct 50 ms 5608 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 472 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 492 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 0 ms 472 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 5716 KB Output is correct
2 Correct 41 ms 4948 KB Output is correct
3 Correct 39 ms 4692 KB Output is correct
4 Correct 46 ms 5716 KB Output is correct
5 Correct 50 ms 5608 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 472 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 492 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 85 ms 9396 KB Output is correct
27 Correct 87 ms 9556 KB Output is correct
28 Correct 69 ms 7780 KB Output is correct
29 Correct 79 ms 9044 KB Output is correct
30 Correct 75 ms 8020 KB Output is correct
31 Correct 70 ms 8020 KB Output is correct
32 Correct 77 ms 9404 KB Output is correct
33 Correct 86 ms 9556 KB Output is correct
34 Correct 79 ms 9556 KB Output is correct
35 Correct 117 ms 9556 KB Output is correct