Submission #817915

#	Time	Username	Problem	Language	Result	Execution time	Memory
817915		ihceker	T-Covering (eJOI19_covering)	C++14	5 / 100	147 ms	11800 KiB

covering

#include<bits/stdc++.h>
#define int long long
#define MOD 1000000007
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

int32_t main(){
	int n,m;
	cin>>n>>m;
	int arr[n][m];
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++)cin>>arr[i][j];
	}
	int k;
	cin>>k;
	int ans=0;
	for(int i=0;i<k;i++){
		int a,b;
		cin>>a>>b;
		if((a==0 || a==n-1) && (b==0 || b==m-1)){
			ans=-1;
			break;
		}
		if(a==0 || a==n-1 || b==0 || b==m-1){
			ans+=arr[a][b];
			if(a-1>=0)ans+=arr[a-1][b];
			if(a+1<n)ans+=arr[a+1][b];
			if(b-1>=0)ans+=arr[a][b-1];
			if(b+1<m)ans+=arr[a][b+1];
		}
		else{
			ans+=arr[a][b]+arr[a-1][b]+arr[a+1][b]+arr[a][b-1]+arr[a][b+1];
			ans-=min({arr[a-1][b],arr[a+1][b],arr[a][b-1],arr[a][b+1]});
		}
	}
	if(ans==-1)cout<<"No"<<endl;
	else cout<<ans<<endl;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 30