oj.uz

Submission #342351

# Submission time Handle Problem Language Result Execution time Memory
342351 2021-01-01T23:34:16 Z FlashGamezzz Werewolf (IOI18_werewolf) C++11
15 / 100
 2328 ms 53996 KB 
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <unordered_set>
#include <vector>
#include <utility>
#include <map>
//#include "werewolf.h"

using namespace std;

vector<int> adj[200000]; map<int, int> cc; bool r1[3000], r2[3000];
int cr, cl, n, minvs[600000] = {}, maxvs[600000] = {};

void updh(int i, int s, int e, int l, int u, int d) {
	if (s > e || s > u || e < l) {
		return;
	}
	if (s >= l && e <= u) {
		minvs[i] = d; maxvs[i] = d; return;
	}
	updh(i*2+1, s, (s+e)/2, l, u, d); updh(i*2+2, (s+e)/2+1, e, l, u, d);
	minvs[i] = min(minvs[i*2+1], minvs[i*2+2]); maxvs[i] = max(maxvs[i*2+1], maxvs[i*2+2]);
}
void updv(int i, int d) {
	updh(0, 0, n-1, i, i, d);
}
int minh(int i, int s, int e, int l, int u) {
	if (s > e || s > u || e < l) {
		return 1000000000;
	}
	if (s >= l && e <= u) {
		return minvs[i];
	}
	return min(minh(2*i+1, s, (s+e)/2, l, u), minh(2*i+2, (s+e)/2+1, e, l, u));
}
int minv(int l, int u) {
	return minh(0, 0, n-1, l, u);
}
int maxh(int i, int s, int e, int l, int u) {
	if (s > e || s > u || e < l) {
		return -1;
	}
	if (s >= l && e <= u) {
		return maxvs[i];
	}
	return max(maxh(2*i+1, s, (s+e)/2, l, u), maxh(2*i+2, (s+e)/2+1, e, l, u));
}
int maxv(int l, int u) {
	return maxh(0, 0, n-1, l, u);
}

void dfs1(int i){
	if (i >= cl){
		r1[i] = true;
		for (int a : adj[i]){
			if (a >= cl && !r1[a]){
				dfs1(a);
			}
		}
	}
}
void dfs2(int i){
	if (i <= cr){
		r2[i] = true;
		for (int a : adj[i]){
			if (a <= cr && !r2[a]){
				dfs2(a);
			}
		}
	}
}
void dfs3(int i, int p, int ind){
	updv(ind, i); cc[i] = ind;
	for (int a : adj[i]){
		if (a != p){
			dfs3(a, i, ind+1);
		}
	}
}

vector<int> check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
	n = N; int Q = S.size(); vector<int> A(Q);
	for (int i = 0; i < Q; ++i) {
		A[i] = 0;
	}
	for (int i = 0; i < X.size(); i++){
		adj[X[i]].push_back(Y[i]); adj[Y[i]].push_back(X[i]);
	}
	if (N == X.size() + 1 && N > 3000){
		for (int i = 0; i < N; i++){
			if (adj[i].size() == 1){
				dfs3(i, -1, 0); break;
			}
		}
		for (int i = 0; i < Q; i++) {
			cr = R[i], cl = L[i]; int cs = cc[S[i]], ce = cc[E[i]];
			if (cs < cl || ce > R[i]){
				continue;
			}
			if (cs < ce){
				int low = cs, high = ce, ub = 0;
				while (true){
					if (low == high){
						ub = low; break;
					}
					if (low+1 == high){
						ub = high;
						if (minv(cs, high) < cl){
							ub = low;
						}
						break;
					}
					int mid = (low + high)/2;
					if (minv(cs, mid) < cl){
						high = mid;
					} else {
						low = mid;
					}
				}
				low = cs, high = ce; int lb = 0;
				while (true){
					if (low == high){
						lb = low; break;
					}
					if (low+1 == high){
						lb = low;
						if (maxv(low, ce) > cr){
							lb = high;
						}
						break;
					}
					int mid = (low + high)/2;
					if (maxv(mid, ce) > cr){
						low = mid;
					} else {
						high = mid;
					}
				}
				if (ub >= lb){
					A[i] = 1;
				}
			} else{
				int low = ce, high = cs, ub = 0;
				while (true){
					if (low == high){
						ub = low; break;
					}
					if (low+1 == high){
						ub = high;
						if (maxv(ce, high) > cr){
							ub = low;
						}
						break;
					}
					int mid = (low + high)/2;
					if (maxv(ce, mid) > cr){
						high = mid;
					} else {
						low = mid;
					}
				}
				low = ce, high = cs; int lb = 0;
				while (true){
					if (low == high){
						lb = low; break;
					}
					if (low+1 == high){
						lb = low;
						if (minv(low, cs) < cl){
							lb = high;
						}
						break;
					}
					int mid = (low + high)/2;
					if (minv(mid, cs) < cl){
						low = mid;
					} else {
						high = mid;
					}
				}
				if (ub >= lb){
					A[i] = 1;
				}
			}
		}
	} else {
		for (int i = 0; i < Q; i++) {
			for (int j = 0; j < N; j++){
				r1[j] = false; r2[j] = false;
			}
			cr = R[i]; cl = L[i];
			dfs1(S[i]); dfs2(E[i]);
			for (int j = L[i]; j <= R[i]; j++){
				if (r1[j] && r2[j]){
					  A[i] = 1; break;
				}
			}
		}
	}
	return A;
}

Compilation message

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:89:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |  for (int i = 0; i < X.size(); i++){
      |                  ~~^~~~~~~~~~
werewolf.cpp:92:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |  if (N == X.size() + 1 && N > 3000){
      |      ~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 260 ms 5356 KB Output is correct
11 Correct 150 ms 5228 KB Output is correct
12 Correct 34 ms 5504 KB Output is correct
13 Correct 287 ms 5356 KB Output is correct
14 Correct 187 ms 5228 KB Output is correct
15 Correct 250 ms 5356 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Incorrect 2328 ms 53996 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 260 ms 5356 KB Output is correct
11 Correct 150 ms 5228 KB Output is correct
12 Correct 34 ms 5504 KB Output is correct
13 Correct 287 ms 5356 KB Output is correct
14 Correct 187 ms 5228 KB Output is correct
15 Correct 250 ms 5356 KB Output is correct
16 Incorrect 2328 ms 53996 KB Output isn't correct
17 Halted 0 ms 0 KB -