제출 #443547

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
443547		penguinhacker	Pohlepko (COCI16_pohlepko)	C++14	80 / 80	18 ms	12324 KiB

pohlepko

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=2000;
int n, m;
string g[mxN], ans;
bool vis[mxN][mxN];

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	for (int i=0; i<n; ++i)
		cin >> g[i];
	vector<ar<int, 2>> q(1, {0, 0});
	while(q.size()) {
		ans+=g[q.front()[0]][q.front()[1]];
		int mn=69;
		vector<ar<int, 2>> nq;
		auto ck=[&](int i, int j) {
			if (i>=n||j>=m||vis[i][j])
				return;
			vis[i][j]=1;
			int cur=g[i][j]-'a';
			if (cur<mn) {
				mn=cur;
				nq={{i, j}};
			} else if (cur==mn)
				nq.push_back({i, j});
		};
		for (ar<int, 2> i : q) {
			ck(i[0]+1, i[1]);
			ck(i[0], i[1]+1);
		}
		swap(q, nq);
	}
	cout << ans;
	return 0;
}

• Subtask 1: 80 / 80