oj.uz

Submission #829485

# Submission time Handle Problem Language Result Execution time Memory
829485 2023-08-18T11:21:35 Z ZeroCool T-Covering (eJOI19_covering) C++14
100 / 100
 382 ms 62852 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define mp make_pair
#define pb push_back

using ll = long long;
using ld = long double;


void solve(int T);
void pre();

const int mxn = 1e6 + 5;
const int SQRT = 500;
const int LOG = 20;
const int inf = 1e18;
const int mod = 1e9 + 7;
const ld eps = 1e-9;

int32_t main(){
	pre();
	int tt = 1;
	//cin>>tt;
	for(int i = 1;i<=tt;i++)solve(i);
    return 0;
}



void pre(){
	#ifdef ONLINE_JUDGE
    ios::sync_with_stdio(false);
    cin.tie(0);
	#endif
	
}

int A[mxn];

vector<int> g[mxn];

int dir[4][2] = {
	{1,0},
	{-1,0},
	{0,1},
	{0,-1}
};

int n,m;

bool in(int x,int y){
	return x >= 0 && y >= 0 && x<n && y < m;
}

bool cen[mxn];
bool vis[mxn];

int ccnt = 0;
vector<int> cmp;

void dfs(int x){
	vis[x] = true;
	if(!cen[x])cmp.push_back(A[x]);
	else ccnt++;

	for(auto v : g[x]){
		if(vis[v])continue;
		dfs(v);
	}
}

inline int hesh(int a,int b){
	return a * m + b; 
}

void solve(int T){
	cin>>n>>m;
	for(int i = 0;i<n;i++){
		for(int j = 0;j<m;j++){
			cin>>A[hesh(i,j)];
		}
	}
	int k;
	cin>>k;
	int ans = 0;

	for(int i = 0;i<k;i++){
		int x,y;
		cin>>x>>y;
		int u = hesh(x,y);

		cen[u] = true;
		ans += A[u];
		for(int j = 0;j<4;j++){
			int nx = x + dir[j][0];
			int ny = y + dir[j][1];

			if(!in(nx,ny))continue;
			int v = hesh(nx,ny);

			g[u].push_back(v);
			g[v].push_back(u);
		}
	}

	for(int i = 0;i<n;i++){
		for(int j = 0;j<m;j++){
			int u = hesh(i,j);

			if(!vis[u] && cen[u]){
				ccnt = 0;
				cmp.clear();

				dfs(u);

				if(cmp.size() < 3 * ccnt){
					cout<<"No"<<endl;
					return;
				}

				sort(cmp.begin(), cmp.end());
				
				for(int k = 1;k<= 3 * ccnt;k++){
					ans += cmp[cmp.size() - k];
				}
			}
		}
	}

	cout<<ans<<endl;

}

Compilation message

covering.cpp: In function 'void solve(long long int)':
covering.cpp:118:19: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  118 |     if(cmp.size() < 3 * ccnt){
      |        ~~~~~~~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23860 KB Output is correct
2 Correct 17 ms 24200 KB Output is correct
3 Correct 28 ms 25068 KB Output is correct
4 Correct 55 ms 27928 KB Output is correct
5 Correct 156 ms 37476 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 24020 KB Output is correct
2 Correct 16 ms 24096 KB Output is correct
3 Correct 27 ms 25092 KB Output is correct
4 Correct 65 ms 27868 KB Output is correct
5 Correct 154 ms 37500 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23892 KB Output is correct
2 Correct 16 ms 24152 KB Output is correct
3 Correct 27 ms 25196 KB Output is correct
4 Correct 54 ms 27860 KB Output is correct
5 Correct 191 ms 37428 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 11 ms 23764 KB Output is correct
3 Correct 20 ms 24404 KB Output is correct
4 Correct 16 ms 24200 KB Output is correct
5 Correct 29 ms 25164 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 11 ms 23800 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23720 KB Output is correct
5 Correct 13 ms 23692 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23860 KB Output is correct
2 Correct 17 ms 24200 KB Output is correct
3 Correct 28 ms 25068 KB Output is correct
4 Correct 55 ms 27928 KB Output is correct
5 Correct 156 ms 37476 KB Output is correct
6 Correct 14 ms 24020 KB Output is correct
7 Correct 16 ms 24096 KB Output is correct
8 Correct 27 ms 25092 KB Output is correct
9 Correct 65 ms 27868 KB Output is correct
10 Correct 154 ms 37500 KB Output is correct
11 Correct 13 ms 23892 KB Output is correct
12 Correct 16 ms 24152 KB Output is correct
13 Correct 27 ms 25196 KB Output is correct
14 Correct 54 ms 27860 KB Output is correct
15 Correct 191 ms 37428 KB Output is correct
16 Correct 12 ms 23764 KB Output is correct
17 Correct 11 ms 23764 KB Output is correct
18 Correct 20 ms 24404 KB Output is correct
19 Correct 16 ms 24200 KB Output is correct
20 Correct 29 ms 25164 KB Output is correct
21 Correct 13 ms 23892 KB Output is correct
22 Correct 15 ms 24112 KB Output is correct
23 Correct 29 ms 25088 KB Output is correct
24 Correct 54 ms 27848 KB Output is correct
25 Correct 155 ms 37464 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23860 KB Output is correct
2 Correct 17 ms 24200 KB Output is correct
3 Correct 28 ms 25068 KB Output is correct
4 Correct 55 ms 27928 KB Output is correct
5 Correct 156 ms 37476 KB Output is correct
6 Correct 14 ms 24020 KB Output is correct
7 Correct 16 ms 24096 KB Output is correct
8 Correct 27 ms 25092 KB Output is correct
9 Correct 65 ms 27868 KB Output is correct
10 Correct 154 ms 37500 KB Output is correct
11 Correct 13 ms 23892 KB Output is correct
12 Correct 16 ms 24152 KB Output is correct
13 Correct 27 ms 25196 KB Output is correct
14 Correct 54 ms 27860 KB Output is correct
15 Correct 191 ms 37428 KB Output is correct
16 Correct 12 ms 23764 KB Output is correct
17 Correct 11 ms 23764 KB Output is correct
18 Correct 20 ms 24404 KB Output is correct
19 Correct 16 ms 24200 KB Output is correct
20 Correct 29 ms 25164 KB Output is correct
21 Correct 12 ms 23764 KB Output is correct
22 Correct 11 ms 23800 KB Output is correct
23 Correct 11 ms 23764 KB Output is correct
24 Correct 11 ms 23720 KB Output is correct
25 Correct 13 ms 23692 KB Output is correct
26 Correct 13 ms 23892 KB Output is correct
27 Correct 15 ms 24112 KB Output is correct
28 Correct 29 ms 25088 KB Output is correct
29 Correct 54 ms 27848 KB Output is correct
30 Correct 155 ms 37464 KB Output is correct
31 Correct 382 ms 62852 KB Output is correct
32 Correct 189 ms 38400 KB Output is correct
33 Correct 162 ms 39544 KB Output is correct
34 Correct 158 ms 38088 KB Output is correct
35 Correct 241 ms 50068 KB Output is correct