oj.uz

Submission #1054804

# Submission time Handle Problem Language Result Execution time Memory
1054804 2024-08-12T12:15:39 Z c2zi6 Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 118 ms 27244 KB 
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "supertrees.h"

VVI comps(VVI s, bool t0, bool t1, bool t2) {
    /*transformations*/
    int n = s.size();
    rep(i, n) rep(j, n) {
        if (s[i][j] == 0) s[i][j] = t0;
        else if (s[i][j] == 1) s[i][j] = t1;
        else if (s[i][j] == 2) s[i][j] = t2;
    }
    sort(all(s));
    VVI ret;
    for (int i = 0; i < n; i++) {
        if (i == 0 || s[i] != s[i-1]) {
            if (i) rep(j, n) {
                if (s[i][j] && s[i-1][j]) {
                    return VVI();
                }
            }
            ret.pb(VI());
            rep(j, n) if (s[i][j]) ret.back().pb(j);
        }
    }
    return ret;
}

int construct(VVI p) {
    int n = p.size();
    VVI comp = comps(p, 0, 1, 1);
    if (comp.size() == 0) return 0;
    VVI ans(n, VI(n));
    /*for (VI vec : comp) {*/
    /*    replr(i, 1, vec.size()-1) {*/
    /*        ans[vec[0]][vec[i]] = true;*/
    /*        ans[vec[i]][vec[0]] = true;*/
    /*    }*/
    /*}*/
    VVVI a;
    for (VI vec : comp) {
        int s = vec.size();
        a.pb(VVI(s, VI(s)));
        rep(i, s) {
            rep(j, s) {
                int x = vec[i];
                int y = vec[j];
                a.back()[i][j] = p[x][y];
            }
        }
    }

    VPI edges;
    rep(c, comp.size()) {
        int n = comp[c].size();
        VVI p = a[c];


        VVI trees = comps(p, 0, 1, 0);
        if (trees.size() == 0) return 0;
        for (VI& v : trees) for (int& x : v) x = comp[c][x];

        /*cout << "COMPONENT ";*/
        /*for (int x : comp[c]) cout << x << " "; cout << endl;*/
        /*rep(i, n) {*/
        /*    rep(j, n) cout << p[i][j] << " ";*/
        /*    cout << endl;*/
        /*}*/
        /*for (VI v : trees) {*/
        /*    cout << "   TREE ";*/
        /*    for (int x : v) cout << x << " ";*/
        /*    cout << endl;*/
        /*}*/

        VI roots;
        for (VI v : trees) {
            int r = v[0];
            roots.pb(r);
            replr(i, 1, v.size()-1) {
                edges.pb({r, v[i]});
            }
        }
        int r = roots.size();
        if (r == 1) continue;
        rep(i, r) {
            edges.pb({roots[i], roots[(i+1)%r]});
        }
    }
    for (auto[u, v] : edges) {
        ans[u][v] = ans[v][u] = 1;
        /*cout << u << " " << v << endl;*/
    }
    build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(VVI)':
supertrees.cpp:84:13: warning: unused variable 'n' [-Wunused-variable]
   84 |         int n = comp[c].size();
      |             ^
supertrees.cpp:118:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  118 |     for (auto[u, v] : edges) {
      |              ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1560 KB Output is correct
7 Correct 118 ms 27244 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1560 KB Output is correct
7 Correct 118 ms 27244 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 4 ms 1184 KB Output is correct
13 Correct 97 ms 23376 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 49 ms 13484 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 6364 KB Output is correct
21 Correct 100 ms 23840 KB Output is correct
22 Correct 99 ms 23376 KB Output is correct
23 Correct 107 ms 25240 KB Output is correct
24 Correct 98 ms 23376 KB Output is correct
25 Correct 45 ms 13392 KB Output is correct
26 Correct 42 ms 13320 KB Output is correct
27 Correct 108 ms 25236 KB Output is correct
28 Correct 97 ms 23376 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 24 ms 6412 KB Output is correct
5 Correct 104 ms 24408 KB Output is correct
6 Correct 95 ms 24004 KB Output is correct
7 Correct 107 ms 26008 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 24 ms 6480 KB Output is correct
10 Correct 98 ms 24460 KB Output is correct
11 Correct 97 ms 23936 KB Output is correct
12 Correct 106 ms 25940 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 24 ms 6344 KB Output is correct
17 Correct 99 ms 24404 KB Output is correct
18 Correct 98 ms 24404 KB Output is correct
19 Correct 97 ms 24144 KB Output is correct
20 Correct 99 ms 24144 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1560 KB Output is correct
7 Correct 118 ms 27244 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 4 ms 1184 KB Output is correct
13 Correct 97 ms 23376 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 49 ms 13484 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 6364 KB Output is correct
21 Correct 100 ms 23840 KB Output is correct
22 Correct 99 ms 23376 KB Output is correct
23 Correct 107 ms 25240 KB Output is correct
24 Correct 98 ms 23376 KB Output is correct
25 Correct 45 ms 13392 KB Output is correct
26 Correct 42 ms 13320 KB Output is correct
27 Correct 108 ms 25236 KB Output is correct
28 Correct 97 ms 23376 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1560 KB Output is correct
7 Correct 118 ms 27244 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 432 KB Output is correct
12 Correct 4 ms 1184 KB Output is correct
13 Correct 97 ms 23376 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 49 ms 13484 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 24 ms 6364 KB Output is correct
21 Correct 100 ms 23840 KB Output is correct
22 Correct 99 ms 23376 KB Output is correct
23 Correct 107 ms 25240 KB Output is correct
24 Correct 98 ms 23376 KB Output is correct
25 Correct 45 ms 13392 KB Output is correct
26 Correct 42 ms 13320 KB Output is correct
27 Correct 108 ms 25236 KB Output is correct
28 Correct 97 ms 23376 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -