Submission #523671

#	Time	Username	Problem	Language	Result	Execution time	Memory
523671		maks007	Maxcomp (info1cup18_maxcomp)	C++14	15 / 100	363 ms	332 KiB

maxcomp

    #include <bits/stdc++.h>
     
    using namespace std;
     
    int dis(pair <int,int>a, pair <int,int> b) {
    	return abs(a.first - b.first) + abs(a.second - b.second);
    }
     
    int main(void) {
    	int n, m;
    	cin >> n >> m;
    	assert(n != 2 and m != 2);
    	if(n == 1) {
    		vector <int> a(m);
    		for(int i = 0; i < m; i ++) cin >> a[i];
    		int ans = INT_MIN;
    		for(int i = 0; i < m; i ++) {
    			for(int end = i; end < m; end ++) {
    				ans = max(ans, *max_element(a.begin() + i, a.begin() + end) - *min_element(a.begin() + i, a.begin() + end) - (end - i));
    			//	cout << *max_element(a.begin() + i, a.begin() + end) << " " << *min_element(a.begin() + i, a.begin() + end) << endl;
    			}
    		}
    		cout << ans;
    		return false;
    	}
    	vector <vector <int> > g(n+2, vector <int> (m+2, -1));
    	vector <vector <int> > used(n+2, vector <int> (m+2, 0));
    	vector <vector <int> > dis(n+2, vector <int> (n+2, 0));
    	queue <pair <int,int>> q;
    	int it[] = {0, 0, +1, -1};
    	int jt[] = {+1, -1, 0, 0};
    	function <int(int, int, pair <int,int>, pair <int,int>)> can=[&](int mn, int mx, pair <int,int> s, pair <int,int> e) {
    		for(int i = 1; i <= n; i ++) {
    			for(int j = 1; j <= m; j ++) used[i][j] = dis[i][j] = 0;
    		}
    		q.push(s);
    		used[s.first][s.second] = 1;
    		dis[s.first][s.second] = 1;
    		
    		while(!q.empty()) {
    			pair <int,int> v = q.front();
    			q.pop();
    			for(int to = 0; to < 4; to ++) {
    				int ni = v.first + it[to];
    				int nj = v.second + jt[to];
    				if(!used[ni][nj] and g[ni][nj] != -1 and g[ni][nj] >= mn and g[ni][nj] <= mx) {
    					q.push({ni, nj});
    					used[ni][nj] = 1;
    					dis[ni][nj] = dis[v.first][v.second] + 1;
    				}
    			}
    		}
    		return dis[e.first][e.second];
    	};
    	for(int i = 1; i <= n; i ++) {
    		for(int j = 1; j <= m; j ++) cin >> g[i][j];
    	}
    	int ans = 0;
     
    	for(int i = 1; i <= n; i ++) {
    		for(int j = 1; j <= m; j ++) {
    			for(int k = i+1; k <= n; k ++) {
    				for(int l = j+1; l <= m; l ++) {
    					if(can(min(g[i][j], g[k][l]), max(g[i][j], g[k][l]), {i, j}, {k, l})) {
    						
    						ans = max(ans, max(g[i][j], g[k][l])
    							- min(g[i][j], g[k][l]) - can(min(g[i][j], g[k][l]), max(g[i][j], g[k][l]), {i, j}, {k, l}));
    					}
    				}
    			}
    		}
    	}
    	cout << ans;
    	return false;
    }

• Subtask 1: 0 / 15
• Subtask 2: 15 / 15
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40