oj.uz

Submission #802829

# Submission time Handle Problem Language Result Execution time Memory
802829 2023-08-02T14:53:34 Z radaiosm7 Swapping Cities (APIO20_swap) C++11
0 / 100
 2000 ms 11488 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];
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) {
  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)}));
    ans = min(ans, max({f(fy, i, fx), f(fx, fy, i), f(i, fx, fy)}));
  }
  
  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 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 42 ms 2676 KB Output is correct
5 Correct 185 ms 2720 KB Output is correct
6 Correct 195 ms 2708 KB Output is correct
7 Correct 242 ms 2644 KB Output is correct
8 Correct 180 ms 2716 KB Output is correct
9 Execution timed out 2054 ms 7840 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 2 ms 2644 KB Output is correct
3 Execution timed out 2049 ms 11488 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 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 42 ms 2676 KB Output is correct
5 Correct 185 ms 2720 KB Output is correct
6 Correct 195 ms 2708 KB Output is correct
7 Correct 242 ms 2644 KB Output is correct
8 Correct 180 ms 2716 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 199 ms 2720 KB Output is correct
11 Correct 243 ms 2720 KB Output is correct
12 Correct 227 ms 2644 KB Output is correct
13 Correct 146 ms 2700 KB Output is correct
14 Correct 169 ms 2720 KB Output is correct
15 Incorrect 226 ms 2720 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 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 42 ms 2676 KB Output is correct
6 Correct 185 ms 2720 KB Output is correct
7 Correct 195 ms 2708 KB Output is correct
8 Correct 242 ms 2644 KB Output is correct
9 Correct 180 ms 2716 KB Output is correct
10 Execution timed out 2054 ms 7840 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 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 42 ms 2676 KB Output is correct
5 Correct 185 ms 2720 KB Output is correct
6 Correct 195 ms 2708 KB Output is correct
7 Correct 242 ms 2644 KB Output is correct
8 Correct 180 ms 2716 KB Output is correct
9 Execution timed out 2054 ms 7840 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 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 42 ms 2676 KB Output is correct
6 Correct 185 ms 2720 KB Output is correct
7 Correct 195 ms 2708 KB Output is correct
8 Correct 242 ms 2644 KB Output is correct
9 Correct 180 ms 2716 KB Output is correct
10 Execution timed out 2054 ms 7840 KB Time limit exceeded
11 Halted 0 ms 0 KB -