oj.uz

Submission #617541

# Submission time Handle Problem Language Result Execution time Memory
617541 2022-08-01T12:03:53 Z happypotato Fountain Parks (IOI21_parks) C++17
5 / 100
 473 ms 35340 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
const int mxN = 2e5 + 1;
const int dx[mxN] = {0, 1, 0, -1}, dy[mxN] = {1, 0, -1, 0};
bool vis[mxN];
pair<pii, int> pts[mxN];
pii opts[mxN];
map<pii, int> allpts;
int n;
bool CheckConnected() {
    queue<pii> q;
    set<pii> track;
    q.push(pts[0].ff);
    track.insert(pts[0].ff);
    while (!q.empty()) {
        pii cur = q.front();
        q.pop();
        for (int k = 0; k < 4; k++) {
            int nx = cur.ff + dx[k] * 2;
            int ny = cur.ss + dy[k] * 2;
            if (allpts.find({nx, ny}) != allpts.end() && track.find({nx, ny}) == track.end()) {
                q.push({nx, ny});
                track.insert({nx, ny});
            }
        }
    }
    return (int(track.size()) == n);
}
bool cmp(pair<pii, int> a, pair<pii, int> b) {
    if (a.ff.ss != b.ff.ss) return a.ff.ss < b.ff.ss;
    return a.ff.ff < b.ff.ff;
}
void st12() {
    vector<pii> edge;
    vis[pts[0].ss] = true;
    for (int i = 0; i < n; i++) {
        if (allpts.find({pts[i].ff.ff, pts[i].ff.ss + 2}) != allpts.end()) {
            int v = allpts[{pts[i].ff.ff, pts[i].ff.ss + 2}];
            if (!vis[v]) {
                edge.pb({pts[i].ss, v});
                vis[v] = true;
            }
        }
        if (pts[i].ff.ff == 4 && allpts.find({2, pts[i].ff.ss}) != allpts.end()) {
            int v = allpts[{2, pts[i].ff.ss}];
            if (!vis[pts[i].ss]) {
                edge.pb({pts[i].ss, v});
                vis[pts[i].ss] = true;
            }
        }
    }
    int m = edge.size();
    vector<int> u(m), v(m), a(m), b(m);
    for (int i = 0; i < m; i++) {
        u[i] = edge[i].ff;
        v[i] = edge[i].ss;
        if (opts[u[i]].ff == opts[v[i]].ff) {
            a[i] = (opts[u[i]].ff == 2 ? 1 : 5);
            b[i] = ((opts[u[i]].ss + opts[v[i]].ss) >> 1);
        } else {
            a[i] = 3;
            b[i] = opts[u[i]].ss - 1;
        }
    }
    build(u, v, a, b);
    return;
}
void st3() {

}
int construct_roads(vector<int> ox, vector<int> oy) {
    n = ox.size();
    int minx = 1e9;
    for (int i = 0; i < n; i++) {
        pts[i] = {{ox[i], oy[i]}, i};
        opts[i] = pts[i].ff;
        allpts[pts[i].ff] = i;
        minx = min(minx, pts[i].ff.ff);
    }
    sort(pts, pts + n, cmp);
    // for (int i = 0; i < n; i++) {
    //     cout << pts[i].ff.ff << ' ' << pts[i].ff.ss << ' ' << pts[i].ss << endl;
    // }
    if (!CheckConnected()) return 0;
    if (minx == 2 || minx == 4) st12();
    else if (minx == 6) st3();
    return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 473 ms 35340 KB Output is correct
24 Incorrect 0 ms 212 KB Given structure is not connected: There is no path between vertices 0 and 4
25 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 473 ms 35340 KB Output is correct
24 Incorrect 0 ms 212 KB Given structure is not connected: There is no path between vertices 0 and 4
25 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct
17 Incorrect 0 ms 212 KB Wrong answer detected in grader
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct
17 Incorrect 465 ms 29888 KB Tree (a[2], b[2]) = (5, 3) is not adjacent to edge between u[2]=138413 @(100002, 2) and v[2]=87394 @(100002, 4)
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 181 ms 17620 KB Output is correct
10 Correct 14 ms 2004 KB Output is correct
11 Correct 90 ms 9400 KB Output is correct
12 Correct 22 ms 2876 KB Output is correct
13 Correct 43 ms 5940 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 180 ms 17616 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 473 ms 35340 KB Output is correct
24 Incorrect 0 ms 212 KB Given structure is not connected: There is no path between vertices 0 and 4
25 Halted 0 ms 0 KB -