oj.uz

Submission #802812

# Submission time Handle Problem Language Result Execution time Memory
802812 2023-08-02T14:48:02 Z radaiosm7 Swapping Cities (APIO20_swap) C++11
0 / 100
 2000 ms 11464 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
#define X first
#define Y second
int i, n, m, ans, curr;
bool visited[100005];
vector<pair<int, int> > adj[100005];
int par[100005];
int dep[100005];
int hd[100005];
pair<int, pair<int, int> > edges[200005];

int find_par(int x) {
  if (par[x] == x) return x;
  else return par[x] = find_par(par[x]);
}

bool isSame(int x, int y) {
  return find_par(x) == find_par(y);
}

void Unite(int x, int y) {
  x = find_par(x);
  y = find_par(y);
  if (x == y) return;
  if (dep[x] < dep[y]) swap(x, y);
  if (dep[x] == dep[y]) ++dep[x];
  par[y] = x;
}

void initDSU() {
  for (int i=0; i < n; ++i) {
    par[i] = i;
    dep[i] = 0;
  }
}

void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
  n = N;
  m = M;
  for (i=0; i < m; ++i) {
    adj[U[i]].push_back(make_pair(V[i], W[i]));
    adj[V[i]].push_back(make_pair(U[i], W[i]));
    edges[i] = make_pair(W[i], make_pair(U[i], V[i]));
  }

  sort(edges, edges+m);
}

int f(int a, int b, int c) {
  initDSU();

  for (int j=0; j < m; ++j) {
    if (edges[j].Y.X == c || edges[j].Y.Y == c) continue;
    Unite(edges[j].Y.X, edges[j].Y.Y);
    if (isSame(a, b)) return edges[j].X;
  }

  return INT_MAX;
}

int getMinimumFuelCapacity(int fx, int fy) {
  if (n <= 3) return -1;
  ans = INT_MAX;

  for (i=0; i < n; ++i) {
    if (i == fx || i == fy) continue;
    ans = min(ans, max({f(fx, i, fy), f(fy, fx, i), f(i, fy, fx)}));
  }
  
  if (ans == INT_MAX) return -1;
  else return ans;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 22 ms 2700 KB Output is correct
5 Correct 97 ms 2720 KB Output is correct
6 Correct 94 ms 2644 KB Output is correct
7 Correct 126 ms 2724 KB Output is correct
8 Correct 89 ms 2736 KB Output is correct
9 Execution timed out 2086 ms 7888 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Execution timed out 2053 ms 11464 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 22 ms 2700 KB Output is correct
5 Correct 97 ms 2720 KB Output is correct
6 Correct 94 ms 2644 KB Output is correct
7 Correct 126 ms 2724 KB Output is correct
8 Correct 89 ms 2736 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 89 ms 2748 KB Output is correct
11 Correct 113 ms 2740 KB Output is correct
12 Correct 107 ms 2736 KB Output is correct
13 Correct 80 ms 2720 KB Output is correct
14 Correct 81 ms 2736 KB Output is correct
15 Incorrect 125 ms 2744 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 22 ms 2700 KB Output is correct
6 Correct 97 ms 2720 KB Output is correct
7 Correct 94 ms 2644 KB Output is correct
8 Correct 126 ms 2724 KB Output is correct
9 Correct 89 ms 2736 KB Output is correct
10 Execution timed out 2086 ms 7888 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 22 ms 2700 KB Output is correct
5 Correct 97 ms 2720 KB Output is correct
6 Correct 94 ms 2644 KB Output is correct
7 Correct 126 ms 2724 KB Output is correct
8 Correct 89 ms 2736 KB Output is correct
9 Execution timed out 2086 ms 7888 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 22 ms 2700 KB Output is correct
6 Correct 97 ms 2720 KB Output is correct
7 Correct 94 ms 2644 KB Output is correct
8 Correct 126 ms 2724 KB Output is correct
9 Correct 89 ms 2736 KB Output is correct
10 Execution timed out 2086 ms 7888 KB Time limit exceeded
11 Halted 0 ms 0 KB -