Problem: Example

Input

2 4
%.@\$
..\$\$


Output

Yes

Solution (in CPP):

Solution:
#include "bits/stdc++.h"

#define REP(i,n) for(ll i=0;i<n;++i)
#define RREP(i,n) for(ll i=n-1;i>=0;--i)
#define FOR(i,m,n) for(ll i=m;i<n;++i)
#define RFOR(i,m,n) for(ll i=n-1;i>=m;--i)
#define ALL(v) (v).begin(),(v).end()
#define PB(a) push_back(a)
#define UNIQUE(v) v.erase(unique(ALL(v)),v.end());
#define DUMP(v) REP(aa, (v).size()) { cout << v[a]; if (a != v.size() - 1)cout << " "; else cout << endl; }
#define INF 1000000001ll
#define MOD 1000000007ll
#define EPS 1e-9

const int dx[8] = { 1,1,0,-1,-1,-1,0,1 };
const int dy[8] = { 0,1,1,1,0,-1,-1,-1 };


using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
ll max(ll a, int b) { return max(a, ll(b)); }
ll max(int a, ll b) { return max(ll(a), b); }
ll min(ll a, int b) { return min(a, ll(b)); }
ll min(int a, ll b) { return min(ll(a), b); }
///(?´????????`)(?´????????`)(?´????????`)(?´????????`)(?´????????`)(?´????????`)///
int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int h, w;
	cin >> h >> w;
	vector<string> v(h);
	vi x, y;
	REP(i, h)cin >> v[i];
	int sx, sy, tx, ty;
	REP(i, h) {
		REP(j, w) {
			if (v[i][j] == '@') {
				sy = i; sx = j;
			}
			else if (v[i][j] == '$') {
				y.push_back(i); x.push_back(j);
			}
			else if (v[i][j] == '%') {
				ty = i; tx = j;
			}
		}
	}
	int n = x.size();
	vvi mp(h, vi(w, INF));
	mp[ty][tx] = 0;
	queue<pii> q;
	q.push({ tx,ty });
	while (!q.empty()) {
		pii p = q.front(); q.pop();
		REP(i, 4) {
			int nx = p.first + dx[i * 2], ny = p.second + dy[i * 2];
			if (nx >= 0 && ny >= 0 && ny < h&&nx < w&&v[ny][nx]!='#'&&mp[ny][nx]==INF) {
				mp[ny][nx] = mp[p.second][p.first] + 1;
				q.push({ nx,ny });
			}
		}
	}
	int p=mp[sy][sx], s = INF;
	REP(i, n) {
		s = min(s, mp[y[i]][x[i]]);
	}
	if (p < s)cout << "Yes" << endl;
	else cout << "No" << endl;
	return 0;
}