Submission #495964

#	Time	Username	Problem	Language	Result	Execution time	Memory
495964		Nuraly_Serikbay	Nice sequence (IZhO18_sequence)	C++14	0 / 100	23 ms	47256 KiB

sequence

/*	Speech to the young  */

#include <bits/stdc++.h>
 
#define endl "\n"
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define sz size()
#define rep(i,k,n) for(int i = k ; i <= n ; ++i)
#define per(i,k,n) for(int i = k ; i >= n ; --i)
#define Zymraq() ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define all(x) x.begin(),x.end()
#define fr(x) freopen(x".in","r",stdin),freopen(x".out","w",stdout)
#define toqta return 0
#define PERMUTE next_permutation
#define no cout<<"NO"<<endl;
#define yes cout<<"YES"<<endl;

 
using namespace std;
  
typedef long long ull;
typedef unsigned long long ll;
typedef string S;
typedef double D;
  
const int N = 1e6 + 17;
const int modd = 1e9 + 7;
const int INF = 2e9 - 19;
const int P = 37;
const ll NN = 1e7 + 17;
const D eps = 1e-19;
const double pi = 3.141592653589793238462643383279 ;
  
bool sortbysec(const pair<int,int> &a, const pair<int,int> &b){
    return (a.second < b.second);
}

void pre (ll a) {
    cout << fixed << setprecision(a);
    return;
} 

ll n, m, q, a[N];
vector <ll> gg[N];
vector <ll> g[N];
ll col[N];
ll l, r, prd;

void get (ll v) {
	for (int i = 0; i < g[v].size(); ++ i) {
		ll to = g[v][i];
		if (prd == v) {
			col[to] = i + 1;
		//	cout << to << ' ' << col[to] << '\n';
		} else {
			col[to] = col[v];
		}
		get (to);
	}
	return;
}

ll nears[N];

int main(){
	cin >> n >> m >> q;
	for (int i = 1; i < n; ++ i) {
		ll x, y;
		cin >> x >> y;
		g[min (x, y)].pb(max (x, y));	
		gg[max(x, y)].pb (min(x, y));
	}
	for (int i = 1; i <= m; ++ i) {
		cin >> a[i];
	}
	while (q --) {
		ll type;
		cin >> type;
		if (type == 1) {
			ll pos, val;
			cin >> pos >> val;
			a[pos] = val;
		}
		if (type == 2) {
			cin >> l >> r >> prd;
			bool ok = 0;
			for (int i = l; i <= r; ++ i) {
				if (a[i] == prd) {
					cout << i << ' ' << i << '\n';
					ok = 1;
					break;
				}
			}
			if (ok) continue;
			get (prd);
			for (int i = l; i < r; ++ i) {
				for (int j = i + 1; j <= r; ++ j) {
					set <ll> s;
					for (int k = i; k <= j; ++ k) {
						s.insert (col[a[k]]); 
					}
					if (s.size() >= 2) {
						cout << i << ' ' << r << '\n';
						ok = 1;
					}
					if (ok) break;
					for (auto to: g[prd]) {
						nears[to] = 1;
					}
					for (int k = i; k <= j; ++ k) {
						if (nears[a[k]]) {
							cout << i << ' ' << j << '\n';
							ok = 1;
							break;
						}
					}
					for (int i = 1; i <= n; ++ i) nears[i] = 0;
				
				}
				if (ok) break;
			}
			for (int i = 1; i <= n; ++ i) col[i] = 0;
			if (ok) continue;
			cout << -1 << ' ' << -1 << '\n';
		}
				
	}
	return 0;
}

/*
5 4 4
1 2
3 1
3 4
5 3
4 5 2 3
2 1 3 1
1 3 5
2 3 4 5
2 1 3 1

*/

Compilation message (stderr)

sequence.cpp: In function 'void get(ll)':
sequence.cpp:53:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for (int i = 0; i < g[v].size(); ++ i) {
      |                  ~~^~~~~~~~~~~~~
sequence.cpp: In function 'int main()':
sequence.cpp:70:20: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
   70 |  for (int i = 1; i < n; ++ i) {
      |                  ~~^~~
sequence.cpp:76:20: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
   76 |  for (int i = 1; i <= m; ++ i) {
      |                  ~~^~~~
sequence.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
   90 |    for (int i = l; i <= r; ++ i) {
      |                    ~~^~~~
sequence.cpp:99:22: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
   99 |    for (int i = l; i < r; ++ i) {
      |                    ~~^~~
sequence.cpp:100:27: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
  100 |     for (int j = i + 1; j <= r; ++ j) {
      |                         ~~^~~~
sequence.cpp:120:24: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
  120 |      for (int i = 1; i <= n; ++ i) nears[i] = 0;
      |                      ~~^~~~
sequence.cpp:125:22: warning: comparison of integer expressions of different signedness: 'int' and 'll' {aka 'long long unsigned int'} [-Wsign-compare]
  125 |    for (int i = 1; i <= n; ++ i) col[i] = 0;
      |                    ~~^~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24