Submission #792436

#	Time	Username	Problem	Language	Result	Execution time	Memory
792436		ono_de206	Prize (CEOI22_prize)	C++14	Compilation error	0 ms	0 KiB

Main

#include<bits/stdc++.h>
using namespace std;

#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second

// #define int long long
 
typedef long long ll;
typedef vector<int> vi;
typedef set<int> si;
typedef multiset<int> msi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;

template<typename T, typename U>
ostream & operator << (ostream &out, const pair<T, U> &c) {
	out << c.first << ' ' << c.second;
    return out;
}

template<typename T>
ostream & operator << (ostream &out, vector<T> &v) {
	const int sz = v.size();
	for (int i = 0; i < sz; i++) {
		if (i) out << ' ';
		out << v[i];
	}
    return out;
}

template<typename T>
istream & operator >> (istream &in, vector<T> &v) {
	for (T &x : v) in >> x;
    return in;
}


template<typename T>
void mxx(T &a, T b){if(b > a) a = b;}
template<typename T>
void mnn(T &a, T b){if(b < a) a = b;}

const int mxn = 1e6 + 10;
int dis1[mxn], dis2[mxn];
bool vis[mxn];
vector<pair<int, int>> adj1[mxn], adj2[mxn];

void dfs1(int to, int dis) {
	dis1[i] = dis;
	vis[to] = 1;
	for(auto it : adj1[to]) {
		if(vis[it.ff]) continue;
		dfs1(it.ff, dis + it.ss);
	}
}

void dfs2(int to, int dis) {
	dis2[i] = dis;
	vis[to] = 1;
	for(auto it : adj2[to]) {
		if(vis[it.ff]) continue;
		dfs2(it.ff, dis + it.ss);
	}
}

int main() {
	fast;
	int n, k, q, t; cin >> n >> k >> q >> t;
	tree tr1(n), tr2(n);
	for(int i = 1; i <= n; i++) {
		int x; cin >> x;
		if(~x) tr1.add(x, i);
	}
	for(int i = 1; i <= n; i++) {
		int x; cin >> x;
		if(~x) tr2.add(x, i);
	}

	tr1.build(); tr1.buildLca();
	tr2.build(); tr2.buildLca();

	vector<int> ks(n);
	iota(all(ks), 1);
	sort(all(ks), [&](int x, int y) {
		return tr1.in[x] < tr1.in[y];
	});
	ks.resize(k);
	sort(all(ks), [&](int x, int y) {
		return tr2.in[x] < tr2.in[y];
	});

	for(int i = 0; i < k; i++) {
		cout << ks[i] << ' ';
	}
	cout << endl;
	for(int i = 0; i + 1 < k; i++) {
		cout << "? " << ks[i] << ' ' << ks[i + 1] << endl;
	}
	cout << "!" << endl;
	for(int i = 0; i + 1 < k; i++) {
		int a, b, c, d;
		cin >> a >> b >> c >> d;
		int lc1 = tr1.lca(ks[i], ks[i + 1]);
		int lc2 = tr2.lca(ks[i], ks[i + 1]);
		adj1[ks[i]].eb(lc1, -a);
		adj1[lc1].eb(ks[i + 1], b);
		adj2[ks[i]].eb(lc2, -c);
		adj2[lc2].eb(ks[i + 1], d);
	}
	dfs1(ks[0], 0);
	for(int i = 0; i < k; i++) {
		vis[ks[i]] = 0;
	}
	dfs2(ks[0], 0);
	vector<pair<int, int>> ans;
	for(int i = 0; i < t; i++) {
		int x, y; cin >> x >> y;
		ans.eb(dis1[x] + dis1[y] - dis1[tr1.lca(x, y)] * 2, dis2[x] + dis2[y] - dis2[tr2.lca(x, y)] * 2);
	}
	for(auto &it : ans) {
		cout << it << endl;
	}
	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void dfs1(int, int)':
Main.cpp:55:7: error: 'i' was not declared in this scope; did you mean 'si'?
   55 |  dis1[i] = dis;
      |       ^
      |       si
Main.cpp: In function 'void dfs2(int, int)':
Main.cpp:64:7: error: 'i' was not declared in this scope; did you mean 'si'?
   64 |  dis2[i] = dis;
      |       ^
      |       si
Main.cpp: In function 'int main()':
Main.cpp:75:2: error: 'tree' was not declared in this scope; did you mean 'free'?
   75 |  tree tr1(n), tr2(n);
      |  ^~~~
      |  free
Main.cpp:78:10: error: 'tr1' was not declared in this scope
   78 |   if(~x) tr1.add(x, i);
      |          ^~~
Main.cpp:82:10: error: 'tr2' was not declared in this scope
   82 |   if(~x) tr2.add(x, i);
      |          ^~~
Main.cpp:85:2: error: 'tr1' was not declared in this scope
   85 |  tr1.build(); tr1.buildLca();
      |  ^~~
Main.cpp:86:2: error: 'tr2' was not declared in this scope
   86 |  tr2.build(); tr2.buildLca();
      |  ^~~