Submission #495383

#	Time	Username	Problem	Language	Result	Execution time	Memory
495383		uncripted	T-Covering (eJOI19_covering)	C++11	15 / 100	203 ms	15832 KiB

covering

#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
int main(){
	int n,m;
	cin>>n>>m;
	int a[n][m];	
	int r[n][m];
	int fix[n][m];
	for(int i=0; i<n; i++){
		for (int j=0; j<m; j++){
			cin>>a[i][j];
			r[i][j]=0;
			fix[i][j]=0;
		}
	}
	int k;
	cin>>k;
	pair<int,int> c[k];


	for(int i=0; i<k; i++){
		cin>>c[i].f>>c[i].s;
		r[c[i].f][c[i].s]=1;
	}
	int pas=0;
	pair<int,int> d[8]={{1,1}, {1,0}, {1,-1}, {0,1}, {0, -1}, {-1,1}, {-1, 0}, {-1,-1}};
	for(int i=0; i<n; i++){
		for(int j=0; j<m; j++){
			int p=0;
			
			for(int ii=0; ii<8; ii++){
				int x=i+d[ii].f;
				int y=j+d[ii].s;
				if(r[i][j]==1 && r[x][y]==1){
					p++;
					fix[i][j]=1;
					fix[i+1][j]=1;
					fix [i-1][j]=1;
					fix[i][j-1]=1;
					fix[i][j+1]=1;
					fix[x][y];
						fix[x+1][y];
							fix[x-1][y];
								fix[x][y-1];
									fix[x][y+1];
				}
			}
			if(p>1){
				cout<<"No"<<endl;
				return 0;
			}
			
		}
	}
	for(int i=0; i<n; i++){
		for(int j=0; j<m; j++){
			if(fix[i][j]!=1 && r[i][j]==1){
				int pas1=-1;
				int pas2=-1;
				int pas3=-1;
				int pas4=-1;
				if(j-1>=0 && j+1<m && i+1<n){
					
			 pas1=a[i][j]+a[i+1][j]+a[i][j-1]+a[i][j+1];
				}
				if(j-1>=0 && j+1<m && i-1>=0){
					
		 pas2=a[i][j]+a[i-1][j]+a[i][j-1]+a[i][j+1];
				}
				if(j+1<m && i+1<n && i-1>=0 ){
					
		 pas3=a[i][j]+a[i][j+1]+a[i+1][j]+a[i-1][j];
				}
				if(j-1>=0 && i+1<n && i-1>=0 ){
					
		 pas4=a[i][j]+a[i][j-1]+a[i+1][j]+a[i-1][j];
				}
				pas+=max(max(pas1,pas2), max(pas3,pas4));
			}else if(fix[i][j]==1){
				pas+=a[i][j];
			}
		}
	}
	cout<<pas;
	
	
}

Compilation message (stderr)

covering.cpp: In function 'int main()':
covering.cpp:43:14: warning: statement has no effect [-Wunused-value]
   43 |      fix[x][y];
      |      ~~~~~~~~^
covering.cpp:44:17: warning: statement has no effect [-Wunused-value]
   44 |       fix[x+1][y];
      |       ~~~~~~~~~~^
covering.cpp:45:18: warning: statement has no effect [-Wunused-value]
   45 |        fix[x-1][y];
      |        ~~~~~~~~~~^
covering.cpp:46:19: warning: statement has no effect [-Wunused-value]
   46 |         fix[x][y-1];
      |         ~~~~~~~~~~^
covering.cpp:47:20: warning: statement has no effect [-Wunused-value]
   47 |          fix[x][y+1];
      |          ~~~~~~~~~~^

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