oj.uz

Submission #67074

# Submission time Handle Problem Language Result Execution time Memory
67074 2018-08-13T09:53:01 Z MrTEK Maxcomp (info1cup18_maxcomp) C++14
60 / 100
 500 ms 20332 KB 
#include <bits/stdc++.h>

using namespace std;
#define mp make_pair
#define pb push_back
#define len(a) (int)a.size()
#define fi first
#define sc second
#define d1(w) cerr<<#w<<":"<<w<<endl;
#define d2(w,c) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<endl;
#define d3(w,c,z) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<" "<<#z<<":"<<z<<endl;
#define left ind+ind
#define right ind+ind+1
#define mid (l+r)/2
#define FAST_IO ios_base::sync_with_stdio(false);
#define endl '\n'

const int maxn = 620;
const long long LINF = 1e18;
const int LOG = 31;
const int INF = 1e9;
const int N = 1e3 + 5;
const int M = 4;
const int SQ = 350;
const int MOD = 998244353;

typedef pair <int,int> pii;


vector <pair<int,pii> > v;

priority_queue <pair <int,pii> > Q;

int n,m,mat[N][N],vis[N][N],ans = -INF,way[4][2] = {{1,0},{0,1},{0,-1},{-1,0}},last;

int main() {
	scanf("%d %d",&n,&m);
	for (short int i = 1 ; i <= n ; i++)
		for (short int j = 1 ; j <= m ; j++) {
			scanf("%d",&mat[i][j]);
			vis[i][j] = -INF;
			v.pb(mp(mat[i][j],mp(i,j)));
		}
	sort(v.begin(),v.end());
	last = len(v) - 1;
	Q.push(v[last--]);
	while(len(Q)) {
		auto temp = Q.top();
		Q.pop();
		int  val = temp.fi,x = temp.sc.fi,y = temp.sc.sc;
		if (vis[x][y] > val) continue;
		ans = max(ans,val - mat[x][y] - 1);
		while(last > 0 && v[last].fi == val) {
			Q.push(v[last--]);
		}
		for (short int i = 0 ; i < 4 ; i++) {
			short int nx = x + way[i][0] , ny = y + way[i][1];
			if (nx > 0 && nx <= n && ny > 0 && ny <= m && val - 1 > vis[nx][ny]) {
				vis[nx][ny] = val - 1;
				Q.push(mp(val - 1,mp(nx,ny)));				
			}
		}
	}
	printf("%d\n",ans);

}

Compilation message

maxcomp.cpp: In function 'int main()':
maxcomp.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
maxcomp.cpp:40:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&mat[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 3 ms 356 KB Output is correct
3 Correct 3 ms 392 KB Output is correct
4 Correct 2 ms 440 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 764 KB Output is correct
2 Correct 3 ms 764 KB Output is correct
3 Correct 2 ms 764 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 3 ms 356 KB Output is correct
3 Correct 3 ms 392 KB Output is correct
4 Correct 2 ms 440 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 4 ms 1004 KB Output is correct
10 Correct 4 ms 1004 KB Output is correct
11 Correct 5 ms 1004 KB Output is correct
12 Correct 4 ms 1004 KB Output is correct
13 Correct 4 ms 1004 KB Output is correct
14 Correct 4 ms 1004 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 3 ms 356 KB Output is correct
3 Correct 3 ms 392 KB Output is correct
4 Correct 2 ms 440 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 656 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 3 ms 764 KB Output is correct
10 Correct 3 ms 764 KB Output is correct
11 Correct 2 ms 764 KB Output is correct
12 Correct 4 ms 1004 KB Output is correct
13 Correct 4 ms 1004 KB Output is correct
14 Correct 5 ms 1004 KB Output is correct
15 Correct 4 ms 1004 KB Output is correct
16 Correct 4 ms 1004 KB Output is correct
17 Correct 4 ms 1004 KB Output is correct
18 Execution timed out 547 ms 20332 KB Time limit exceeded
19 Halted 0 ms 0 KB -