Submission #1204481

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204481		PlayVoltz	Wiring (IOI17_wiring)	C++20	Compilation error	0 ms	0 KiB

wiring

#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

vector<int> vect, p;
vector<pii> ans;

void dfs(set<int> &s){
	if (s.size()<=1)return;
	int node=*(--s.end()), a=vect[node], b=p[node];
	bool front=1;
	while (1){
		if (vect[node]<vect[a]&&a<=vect[node])break;
		if (vect[node]<vect[b]&&b<=vect[node]){
			front=0;
			break;
		}
		a=vect[a], b=p[b];
	}
	set<int> temp;
	if (front){
		int t=a;
		while (t!=node)s.erase(t), temp.insert(t), t=p[t];
		ans.pb(mp(node, a));
		swap(p[vect[node]], p[vect[a]]);
		swap(vect[node], vect[a]);
	}
	else{
		int t=b;
		while (t!=node)t=vect[t], s.erase(t), temp.insert(t);
		ans.pb(mp(node, b));
		swap(p[vect[node]], p[vect[b]]);
		swap(vect[node], vect[b]);
	}
	dfs(s);
	dfs(temp);
}

int32_t main(){
	int n, k, res=0;
	cin>>n>>k;
	vect.resize(n+1);
	p.resize(n+1);
	for (int i=1; i<=n; ++i)cin>>vect[i], p[vect[i]]=i, res+=abs(vect[i]-i);
	vector<bool> visited(n+1, 0);
	for (int i=1; i<=n; ++i){
		if (visited[i])continue;
		visited[i]=1;
		set<int> s;
		int node=vect[i];
		s.insert(i);
		while (node!=i){
			s.insert(node);
			visited[node]=1;
			node=vect[node];
		}
		dfs(s);
	}
	cout<<ans.size()<<" "<<res/2+k*ans.size()<<"\n";
	for (auto a:ans)cout<<a.fi<<" "<<a.se<<"\n";
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccdIGQ0I.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccuBx8ih.o:wiring.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccdIGQ0I.o: in function `main':
grader.cpp:(.text.startup+0x22b): undefined reference to `min_total_length(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status