Submission #523675

#	Time	Username	Problem	Language	Result	Execution time	Memory
523675		maks007	Maxcomp (info1cup18_maxcomp)	C++14	15 / 100	324 ms	292 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;
        	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> (m+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