oj.uz

Submission #760711

# Submission time Handle Problem Language Result Execution time Memory
760711 2023-06-18T08:13:35 Z NothingXD Parachute rings (IOI12_rings) C++17
52 / 100
 1719 ms 262144 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out(){cerr<<endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cout << H << ' ';
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 1e6 + 10;

int n, par[5][maxn], cycle;
bool bad[5];
vector<int> g[maxn][5], ver;

int getpar(int idx, int v){
	return (par[idx][v] < 0? v: par[idx][v] = getpar(idx, par[idx][v]));
}

bool merge(int idx, int x, int y){
	int u = getpar(idx, x);
	int v = getpar(idx, y);
	if (u == v) return false;
	par[idx][u] += par[idx][v];
	par[idx][v] = u;
	return true;
}

void Init(int N_) {
	memset(par, -1, sizeof par);
	n = N_;
}

void Link(int A, int B) {
	if (!bad[0]){
		g[A][0].push_back(B);
		g[B][0].push_back(A);
		if (g[A][0].size() == 3){
			bad[0] = true;
			ver.push_back(A);
			for (auto x: g[A][0])ver.push_back(x);
			for (int i = 1; i <= ver.size(); i++){
				for (int j = 0; j < n; j++){
					if (j == ver[i-1]) continue;
					for (auto u: g[j][0]){
						if (u < j || u == ver[i-1]) continue;
						g[j][i].push_back(u);
						g[u][i].push_back(j);
						if (max(g[j][i].size(), g[u][i].size()) > 2 || !merge(i, j, u)) bad[i] = true;
					}
				}
			}
		}
		else if (g[B][0].size() == 3){
			bad[0] = true;
			ver.push_back(B);
			for (auto x: g[B][0])ver.push_back(x);
			for (int i = 1; i <= ver.size(); i++){
				for (int j = 0; j < n; j++){
					if (j == ver[i-1]) continue;
					for (auto u: g[j][0]){
						if (u < j || u == ver[i-1]) continue;
						g[j][i].push_back(u);
						g[u][i].push_back(j);
						if (max(g[j][i].size(), g[u][i].size()) > 2 || !merge(i, j, u)) bad[i] = true;
					}
				}
			}
		}
		if (!merge(0, A, B)){
			if (cycle != 0) bad[0] = true;
			cycle = -par[0][getpar(0, A)];
		}
		return;
	}
	for (int i = 1; i <= ver.size(); i++){
		if (A != ver[i-1] && B != ver[i-1]){
			g[A][i].push_back(B);
			g[B][i].push_back(A);
			if (max(g[A][i].size(), g[B][i].size()) > 2 || !merge(i, A, B)) bad[i] = true;
		}
	}
}

int CountCritical() {
	if (!bad[0]){
		if (cycle == 0) return n;
		return cycle;
	}
	int ans = 0;
	for (int i = 1; i <= ver.size(); i++){
		ans += (!bad[i]);
	}
	return ans;
}

Compilation message

rings.cpp: In function 'void Link(int, int)':
rings.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |    for (int i = 1; i <= ver.size(); i++){
      |                    ~~^~~~~~~~~~~~~
rings.cpp:72:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |    for (int i = 1; i <= ver.size(); i++){
      |                    ~~^~~~~~~~~~~~~
rings.cpp:90:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |  for (int i = 1; i <= ver.size(); i++){
      |                  ~~^~~~~~~~~~~~~
rings.cpp: In function 'int CountCritical()':
rings.cpp:105:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |  for (int i = 1; i <= ver.size(); i++){
      |                  ~~^~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 137164 KB Output is correct
2 Correct 64 ms 137852 KB Output is correct
3 Correct 63 ms 137932 KB Output is correct
4 Correct 65 ms 137396 KB Output is correct
5 Correct 61 ms 137380 KB Output is correct
6 Correct 62 ms 137400 KB Output is correct
7 Correct 61 ms 137392 KB Output is correct
8 Correct 61 ms 137416 KB Output is correct
9 Correct 64 ms 137920 KB Output is correct
10 Correct 63 ms 138048 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 153572 KB Output is correct
2 Correct 1719 ms 251224 KB Output is correct
3 Correct 1404 ms 246520 KB Output is correct
4 Correct 732 ms 168480 KB Output is correct
5 Correct 754 ms 168564 KB Output is correct
6 Correct 736 ms 167540 KB Output is correct
7 Correct 1348 ms 244700 KB Output is correct
8 Runtime error 1287 ms 262144 KB Execution killed with signal 9
9 Halted 0 ms 0 KB -

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 137164 KB Output is correct
2 Correct 64 ms 137852 KB Output is correct
3 Correct 63 ms 137932 KB Output is correct
4 Correct 65 ms 137396 KB Output is correct
5 Correct 61 ms 137380 KB Output is correct
6 Correct 62 ms 137400 KB Output is correct
7 Correct 61 ms 137392 KB Output is correct
8 Correct 61 ms 137416 KB Output is correct
9 Correct 64 ms 137920 KB Output is correct
10 Correct 63 ms 138048 KB Output is correct
11 Correct 64 ms 138016 KB Output is correct
12 Correct 68 ms 138828 KB Output is correct
13 Correct 68 ms 138672 KB Output is correct
14 Correct 65 ms 137996 KB Output is correct
15 Correct 64 ms 137804 KB Output is correct
16 Correct 63 ms 137532 KB Output is correct
17 Correct 70 ms 138496 KB Output is correct
18 Correct 68 ms 138852 KB Output is correct
19 Correct 63 ms 137584 KB Output is correct
20 Correct 69 ms 138824 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 137164 KB Output is correct
2 Correct 64 ms 137852 KB Output is correct
3 Correct 63 ms 137932 KB Output is correct
4 Correct 65 ms 137396 KB Output is correct
5 Correct 61 ms 137380 KB Output is correct
6 Correct 62 ms 137400 KB Output is correct
7 Correct 61 ms 137392 KB Output is correct
8 Correct 61 ms 137416 KB Output is correct
9 Correct 64 ms 137920 KB Output is correct
10 Correct 63 ms 138048 KB Output is correct
11 Correct 64 ms 138016 KB Output is correct
12 Correct 68 ms 138828 KB Output is correct
13 Correct 68 ms 138672 KB Output is correct
14 Correct 65 ms 137996 KB Output is correct
15 Correct 64 ms 137804 KB Output is correct
16 Correct 63 ms 137532 KB Output is correct
17 Correct 70 ms 138496 KB Output is correct
18 Correct 68 ms 138852 KB Output is correct
19 Correct 63 ms 137584 KB Output is correct
20 Correct 69 ms 138824 KB Output is correct
21 Correct 78 ms 138356 KB Output is correct
22 Correct 95 ms 138812 KB Output is correct
23 Correct 88 ms 139348 KB Output is correct
24 Correct 103 ms 143052 KB Output is correct
25 Correct 72 ms 137940 KB Output is correct
26 Correct 113 ms 145460 KB Output is correct
27 Correct 92 ms 139672 KB Output is correct
28 Correct 118 ms 148372 KB Output is correct
29 Correct 98 ms 143252 KB Output is correct
30 Correct 101 ms 140368 KB Output is correct

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 137164 KB Output is correct
2 Correct 64 ms 137852 KB Output is correct
3 Correct 63 ms 137932 KB Output is correct
4 Correct 65 ms 137396 KB Output is correct
5 Correct 61 ms 137380 KB Output is correct
6 Correct 62 ms 137400 KB Output is correct
7 Correct 61 ms 137392 KB Output is correct
8 Correct 61 ms 137416 KB Output is correct
9 Correct 64 ms 137920 KB Output is correct
10 Correct 63 ms 138048 KB Output is correct
11 Correct 295 ms 153572 KB Output is correct
12 Correct 1719 ms 251224 KB Output is correct
13 Correct 1404 ms 246520 KB Output is correct
14 Correct 732 ms 168480 KB Output is correct
15 Correct 754 ms 168564 KB Output is correct
16 Correct 736 ms 167540 KB Output is correct
17 Correct 1348 ms 244700 KB Output is correct
18 Runtime error 1287 ms 262144 KB Execution killed with signal 9
19 Halted 0 ms 0 KB -