Submission #1175750

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1175750	2025-03-29 06:56:27	Muhammet	Swapping Cities (APIO20_swap)	C++17	6 / 100	248 ms	43644 KiB

swap

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#include "bits/stdc++.h"
#include "swap.h"
// #include "grader.cpp"
using namespace std;
const int N = 3e5 + 5;
int p[N], a[N], c[N], h[N], par[N], sp[N][30];
vector <int> v[N];
int fnd(int x) {
    if(p[x] == x) return x;
    return p[x] = fnd(p[x]);
}
void dfs(int x, int y) {
    h[x] = h[y] + 1;
    par[x] = y;
    for(auto i : v[x]) {
        dfs(i, x);
    }
}
int lca(int x, int y) {
    if(h[x] < h[y]) swap(x, y);
    for(int i = 29; i >= 0; i--) {
        if(h[sp[x][i]] >= h[y]) x = sp[x][i];
    }
 
 
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• Subtask 2: 0 / 7
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• Subtask 6: 0 / 27