oj.uz

Submission #578660

# Submission time Handle Problem Language Result Execution time Memory
578660 2022-06-17T13:18:43 Z Noam527 Game (APIO22_game) C++17
2 / 100
 1 ms 292 KB 
#include <bits/stdc++.h>
#include "game.h"
const int OO = 0;
const int OOO = 0;
using namespace std;

int n, k;
vector<vector<int>> g, grev;
vector<int> s, e;
// s: maximum that reaches us
// e: minimum that we can reach
// s <= e as long as the answer is 0 (with s < e for all non-special vertices)

void init(int nn, int kk) {
	g.clear();
	grev.clear();
	s.clear();
	e.clear();

	n = nn;
	k = kk;
	g.resize(n);
	grev.resize(n);
	s.resize(n, -1);
	e.resize(n, k);

	for (int i = 0; i < k; i++) {
		s[i] = i;
		e[i] = i;
	}
}

int add(int u, int v) {
	if (OO) {
		cout << "add " << u << " " << v << '\n';
		cout << s[u] << " " << e[v] << '\n';
	}
	if (s[u] >= e[v]) return 1;
	if (s[u] > s[v]) {
		if (s[u] - s[v] >= e[v] - s[u]) {
			if (OO) {
				cout << "add " << u << " " << v << " updates forward\n";
			}
			s[v] = s[u];
			for (const auto &i : g[v])
				if (add(v, i)) return 1;
		}
	}
	if (e[u] > e[v]) {
		if (e[u] - e[v] >= e[v] - s[v]) {
			if (OO) {
				cout << "add " << u << " " << v << " updates backward\n";
			}
			e[u] = e[v];
			for (const auto &i : grev[u])
				if (add(i, u)) return 1;
		}
	}
	return 0;
}

void brute_dfs(vector<int> &vis, int v) {
	if (vis[v]) return;
	vis[v] = 1;
	for (const auto &i : g[v])
		brute_dfs(vis, i);
}

int brute() {
	vector<int> vis(n);
	for (int i = 0; i < k; i++) {
		for (auto &x : vis) x = 0;
		for (const auto &j : g[i])
			brute_dfs(vis, j);
		for (int j = 0; j <= i; j++)
			if (vis[j]) return 1;
	}
	return 0;
}

int add_teleporter(int u, int v) {
	if (OO) {
		cout << "current s: ";
		for (const auto &i : s) cout << i << " "; cout << '\n';
		cout << "current e: ";
		for (const auto &i : e) cout << i << " "; cout << '\n';
	}
	
	if (u < k && v < k) {
		return u >= v;
	}
	
	g[u].push_back(v);
	grev[v].push_back(u);
	int x = add(u, v);
	if (OOO) {
		int y = brute();
		if (x != y) {
			cout << "difference! " << x << " " << y << '\n';
			return 2;
		}
	}
	return x;
}

Compilation message

game.cpp: In function 'int add_teleporter(int, int)':
game.cpp:84:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   84 |   for (const auto &i : s) cout << i << " "; cout << '\n';
      |   ^~~
game.cpp:84:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   84 |   for (const auto &i : s) cout << i << " "; cout << '\n';
      |                                             ^~~~
game.cpp:86:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   86 |   for (const auto &i : e) cout << i << " "; cout << '\n';
      |   ^~~
game.cpp:86:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   86 |   for (const auto &i : e) cout << i << " "; cout << '\n';
      |                                             ^~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 292 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Incorrect 0 ms 208 KB Wrong Answer[1]
19 Halted 0 ms 0 KB -

Subtask #3
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 292 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Incorrect 0 ms 208 KB Wrong Answer[1]
19 Halted 0 ms 0 KB -

Subtask #4
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 292 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Incorrect 0 ms 208 KB Wrong Answer[1]
19 Halted 0 ms 0 KB -

Subtask #5
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 292 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Incorrect 0 ms 208 KB Wrong Answer[1]
19 Halted 0 ms 0 KB -