oj.uz

Submission #564527

# Submission time Handle Problem Language Result Execution time Memory
564527 2022-05-19T10:27:56 Z 1zaid1 Building Skyscrapers (CEOI19_skyscrapers) C++14
8 / 100
 274 ms 479040 KB 
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
typedef long long ll;
const int M = 2e7 + 5, MOD = 1e9+7;
int vis[M], cnt;
vector<int> node[M];

struct point {int x, y, i;};

vector<int> ans;
void bfs(int s) {
    queue<int> q;
    q.push(s);
    vis[s] = true;
    while (!q.empty()) {
        int t = q.front();
        cnt++;
        q.pop();
        ans.push_back(t);
        for (int i:node[t]) {
            if (!vis[i]) {
                vis[i] = true;
                q.push(i);
            }
        }
    }
}

signed main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    srand(time(0));
    
    int n, t;
    cin >> n >> t;

    vector<point> v(n);
    for (auto&i:v) cin >> i.x >> i.y;
    int ind = 1; for (auto&i:v) i.i = ind++;
    
    vector<point> p;
    sort(v.begin(), v.end(), [](point a, point b){if (a.y == b.y) return a.x < b.x; return a.y < b.y;});
    for (int i = 0; i < n; i++) {
        while (i < n && (!i || v[i].y == v[i-1].y)) {
            p.push_back(v[i++]);
        }

        for (int j = 1; j < p.size(); j++) {
            if (p[j-1].x+1 == p[j].x) {
                node[p[j].i].push_back(p[j-1].i);
                node[p[j-1].i].push_back(p[j].i);
            }
        }

        p.clear();
        p.push_back(v[i]);
    }

    p.clear();
    sort(v.begin(), v.end(), [](point a, point b){if (a.x == b.x) return a.y < b.y; return a.x < b.x;});
    for (int i = 0; i < n; i++) {
        while (i < n && (!i || v[i].x == v[i-1].x)) {
            p.push_back(v[i++]);
        }

        for (int j = 1; j < p.size(); j++) {
            if (p[j-1].y+1 == p[j].y) {
                node[p[j].i].push_back(p[j-1].i);
                node[p[j-1].i].push_back(p[j].i);
            }
        }

        p.clear();
        p.push_back(v[i]);
    }

    p.clear();
    sort(v.begin(), v.end(), [](point a, point b){if ((a.x+a.y) == (b.x+b.y)) return a.x < b.x; return a.x+a.y < b.x+b.y;});
    for (int i = 0; i < n; i++) {
        while (i < n && (!i || (v[i].x+v[i].y) == (v[i-1].x+v[i-1].y))) {
            p.push_back(v[i++]);
        }

        for (int j = 1; j < p.size(); j++) {
            if (p[j-1].x+1 == p[j].x) {
                node[p[j].i].push_back(p[j-1].i);
                node[p[j-1].i].push_back(p[j].i);
            }
        }

        p.clear();
        p.push_back(v[i]);
    }

    p.clear();
    sort(v.begin(), v.end(), [](point a, point b){if ((a.x-a.y) == (b.x-b.y)) return a.x < b.x; return a.x-a.y < b.x-b.y;});
    for (int i = 0; i < n; i++) {
        while (i < n && (!i || (v[i].x-v[i].y) == (v[i-1].x-v[i-1].y))) {
            p.push_back(v[i++]);
        }

        for (int j = 1; j < p.size(); j++) {
            if (p[j-1].x+1 == p[j].x) {
                node[p[j].i].push_back(p[j-1].i);
                node[p[j-1].i].push_back(p[j].i);
            }
        }

        p.clear();
        p.push_back(v[i]);
    }

    bfs(n);
    if (cnt == n) {
        cout << "YES" << endl;
        for (int i:ans) cout << i << endl;
    } else cout << "NO" << endl;

    return 0;
}

/*
3 2
0 0
0 1
0 2
*/

Compilation message

skyscrapers.cpp: In function 'int main()':
skyscrapers.cpp:49:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for (int j = 1; j < p.size(); j++) {
      |                         ~~^~~~~~~~~~
skyscrapers.cpp:67:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         for (int j = 1; j < p.size(); j++) {
      |                         ~~^~~~~~~~~~
skyscrapers.cpp:85:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |         for (int j = 1; j < p.size(); j++) {
      |                         ~~^~~~~~~~~~
skyscrapers.cpp:103:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |         for (int j = 1; j < p.size(); j++) {
      |                         ~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 470068 KB ans=YES N=1
2 Correct 208 ms 469920 KB ans=YES N=4
3 Correct 211 ms 470068 KB ans=NO N=4
4 Correct 210 ms 469964 KB ans=YES N=5
5 Correct 209 ms 469964 KB ans=YES N=9
6 Correct 226 ms 469940 KB ans=YES N=5
7 Correct 208 ms 469972 KB ans=NO N=9
8 Correct 210 ms 469968 KB ans=NO N=10
9 Correct 210 ms 469924 KB ans=YES N=10
10 Correct 211 ms 469920 KB ans=YES N=10
11 Correct 233 ms 469968 KB ans=YES N=10
12 Correct 205 ms 469968 KB ans=YES N=9
13 Correct 208 ms 469896 KB ans=YES N=9
14 Correct 207 ms 469976 KB ans=YES N=8
15 Correct 206 ms 469888 KB ans=YES N=8
16 Correct 228 ms 469880 KB ans=NO N=2

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 470068 KB ans=YES N=1
2 Correct 208 ms 469920 KB ans=YES N=4
3 Correct 211 ms 470068 KB ans=NO N=4
4 Correct 210 ms 469964 KB ans=YES N=5
5 Correct 209 ms 469964 KB ans=YES N=9
6 Correct 226 ms 469940 KB ans=YES N=5
7 Correct 208 ms 469972 KB ans=NO N=9
8 Correct 210 ms 469968 KB ans=NO N=10
9 Correct 210 ms 469924 KB ans=YES N=10
10 Correct 211 ms 469920 KB ans=YES N=10
11 Correct 233 ms 469968 KB ans=YES N=10
12 Correct 205 ms 469968 KB ans=YES N=9
13 Correct 208 ms 469896 KB ans=YES N=9
14 Correct 207 ms 469976 KB ans=YES N=8
15 Correct 206 ms 469888 KB ans=YES N=8
16 Correct 228 ms 469880 KB ans=NO N=2
17 Correct 209 ms 469860 KB ans=YES N=17
18 Correct 208 ms 469904 KB ans=YES N=25
19 Correct 211 ms 469928 KB ans=YES N=100
20 Correct 213 ms 469920 KB ans=YES N=185
21 Correct 210 ms 469976 KB ans=NO N=174
22 Correct 211 ms 469992 KB ans=YES N=90
23 Correct 206 ms 469876 KB ans=YES N=63
24 Correct 209 ms 469896 KB ans=YES N=87
25 Correct 212 ms 470020 KB ans=YES N=183
26 Correct 210 ms 469892 KB ans=YES N=188
27 Correct 208 ms 469964 KB ans=YES N=183
28 Correct 208 ms 469940 KB ans=YES N=189
29 Correct 209 ms 469964 KB ans=YES N=200
30 Correct 217 ms 469912 KB ans=YES N=190
31 Correct 213 ms 470000 KB ans=YES N=187
32 Correct 209 ms 469956 KB ans=YES N=187
33 Correct 208 ms 470008 KB ans=YES N=182
34 Correct 209 ms 469992 KB ans=YES N=184
35 Correct 218 ms 469916 KB ans=YES N=188
36 Correct 209 ms 469980 KB ans=YES N=181
37 Correct 216 ms 469900 KB ans=YES N=188
38 Correct 211 ms 470008 KB ans=YES N=191
39 Incorrect 214 ms 469992 KB Added cell 196 (16,2) not reachable from infinity
40 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 470068 KB ans=YES N=1
2 Correct 208 ms 469920 KB ans=YES N=4
3 Correct 211 ms 470068 KB ans=NO N=4
4 Correct 210 ms 469964 KB ans=YES N=5
5 Correct 209 ms 469964 KB ans=YES N=9
6 Correct 226 ms 469940 KB ans=YES N=5
7 Correct 208 ms 469972 KB ans=NO N=9
8 Correct 210 ms 469968 KB ans=NO N=10
9 Correct 210 ms 469924 KB ans=YES N=10
10 Correct 211 ms 469920 KB ans=YES N=10
11 Correct 233 ms 469968 KB ans=YES N=10
12 Correct 205 ms 469968 KB ans=YES N=9
13 Correct 208 ms 469896 KB ans=YES N=9
14 Correct 207 ms 469976 KB ans=YES N=8
15 Correct 206 ms 469888 KB ans=YES N=8
16 Correct 228 ms 469880 KB ans=NO N=2
17 Correct 209 ms 469860 KB ans=YES N=17
18 Correct 208 ms 469904 KB ans=YES N=25
19 Correct 211 ms 469928 KB ans=YES N=100
20 Correct 213 ms 469920 KB ans=YES N=185
21 Correct 210 ms 469976 KB ans=NO N=174
22 Correct 211 ms 469992 KB ans=YES N=90
23 Correct 206 ms 469876 KB ans=YES N=63
24 Correct 209 ms 469896 KB ans=YES N=87
25 Correct 212 ms 470020 KB ans=YES N=183
26 Correct 210 ms 469892 KB ans=YES N=188
27 Correct 208 ms 469964 KB ans=YES N=183
28 Correct 208 ms 469940 KB ans=YES N=189
29 Correct 209 ms 469964 KB ans=YES N=200
30 Correct 217 ms 469912 KB ans=YES N=190
31 Correct 213 ms 470000 KB ans=YES N=187
32 Correct 209 ms 469956 KB ans=YES N=187
33 Correct 208 ms 470008 KB ans=YES N=182
34 Correct 209 ms 469992 KB ans=YES N=184
35 Correct 218 ms 469916 KB ans=YES N=188
36 Correct 209 ms 469980 KB ans=YES N=181
37 Correct 216 ms 469900 KB ans=YES N=188
38 Correct 211 ms 470008 KB ans=YES N=191
39 Incorrect 214 ms 469992 KB Added cell 196 (16,2) not reachable from infinity
40 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 470024 KB ans=NO N=1934
2 Correct 223 ms 470092 KB ans=NO N=1965
3 Incorrect 210 ms 470200 KB Contestant's solution is not lexicographically largest at index 1824 (1813 vs 974)
4 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 470068 KB ans=YES N=1
2 Correct 208 ms 469920 KB ans=YES N=4
3 Correct 211 ms 470068 KB ans=NO N=4
4 Correct 210 ms 469964 KB ans=YES N=5
5 Correct 209 ms 469964 KB ans=YES N=9
6 Correct 226 ms 469940 KB ans=YES N=5
7 Correct 208 ms 469972 KB ans=NO N=9
8 Correct 210 ms 469968 KB ans=NO N=10
9 Correct 210 ms 469924 KB ans=YES N=10
10 Correct 211 ms 469920 KB ans=YES N=10
11 Correct 233 ms 469968 KB ans=YES N=10
12 Correct 205 ms 469968 KB ans=YES N=9
13 Correct 208 ms 469896 KB ans=YES N=9
14 Correct 207 ms 469976 KB ans=YES N=8
15 Correct 206 ms 469888 KB ans=YES N=8
16 Correct 228 ms 469880 KB ans=NO N=2
17 Correct 209 ms 469860 KB ans=YES N=17
18 Correct 208 ms 469904 KB ans=YES N=25
19 Correct 211 ms 469928 KB ans=YES N=100
20 Correct 213 ms 469920 KB ans=YES N=185
21 Correct 210 ms 469976 KB ans=NO N=174
22 Correct 211 ms 469992 KB ans=YES N=90
23 Correct 206 ms 469876 KB ans=YES N=63
24 Correct 209 ms 469896 KB ans=YES N=87
25 Correct 212 ms 470020 KB ans=YES N=183
26 Correct 210 ms 469892 KB ans=YES N=188
27 Correct 208 ms 469964 KB ans=YES N=183
28 Correct 208 ms 469940 KB ans=YES N=189
29 Correct 209 ms 469964 KB ans=YES N=200
30 Correct 217 ms 469912 KB ans=YES N=190
31 Correct 213 ms 470000 KB ans=YES N=187
32 Correct 209 ms 469956 KB ans=YES N=187
33 Correct 208 ms 470008 KB ans=YES N=182
34 Correct 209 ms 469992 KB ans=YES N=184
35 Correct 218 ms 469916 KB ans=YES N=188
36 Correct 209 ms 469980 KB ans=YES N=181
37 Correct 216 ms 469900 KB ans=YES N=188
38 Correct 211 ms 470008 KB ans=YES N=191
39 Incorrect 214 ms 469992 KB Added cell 196 (16,2) not reachable from infinity
40 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 269 ms 478332 KB ans=NO N=66151
2 Correct 243 ms 472328 KB ans=NO N=64333
3 Incorrect 274 ms 479040 KB Contestant's solution is not lexicographically largest at index 69316 (69235 vs 6892)
4 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 470024 KB ans=NO N=1934
2 Correct 223 ms 470092 KB ans=NO N=1965
3 Incorrect 210 ms 470200 KB Contestant's solution is not lexicographically largest at index 1824 (1813 vs 974)
4 Halted 0 ms 0 KB -