Problem: Example

Input

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


Output

Yes

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define pi M_PI
#define R cin>>
#define Z class
#define ll long long
#define ln cout<<'\n'
#define in(a) insert(a)
#define pb(a) push_back(a)
#define pd(a) printf("%.10f\n",a)
#define mem(a) memset(a,0,sizeof(a))
#define all(c) (c).begin(),(c).end()
#define iter(c) __typeof((c).begin())
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)
#define REP(i,m,n) for(int i=(int)(m);i<(int)(n);i++)
#define rep(i,n) REP(i,0,n)
#define tr(it,c) for(iter(c) it=(c).begin();it!=(c).end();it++)
template<Z A>void pr(A a){cout<<a;ln;}
template<Z A,Z B>void pr(A a,B b){cout<<a<<' ';pr(b);}
template<Z A,Z B,Z C>void pr(A a,B b,C c){cout<<a<<' ';pr(b,c);}
template<Z A,Z B,Z C,Z D>void pr(A a,B b,C c,D d){cout<<a<<' ';pr(b,c,d);}
template<Z A>void PR(A a,ll n){rep(i,n){if(i)cout<<' ';cout<<a[i];}ln;}
ll check(ll n,ll m,ll x,ll y){return x>=0&&x<n&&y>=0&&y<m;}
const ll MAX=1000000007,MAXL=1LL<<61,dx[4]={-1,0,1,0},dy[4]={0,1,0,-1};
typedef pair<int,int> P;

void Main() {
  int n,m;
  cin >> n >> m;
  string s[n];
  rep(i,n) R s[i];
  vector<P> v;
  int d[n][m];
  rep(i,n)rep(j,m)d[i][j]=MAX;
  queue<P> que;
  rep(i,n)rep(j,m) {
    if(s[i][j]=='%') {
      d[i][j]=0;
      que.push(P(i,j));
    }
    if(s[i][j]=='@') v.pb(P(i,j));
  }
  rep(i,n)rep(j,m)if(s[i][j]=='$') v.pb(P(i,j));
  while(!que.empty()) {
    P p=que.front();que.pop();
    rep(i,4) {
      int x=p.F+dx[i],y=p.S+dy[i];
      if(!check(n,m,x,y)||d[x][y]<=d[p.F][p.S]+1||s[x][y]=='#') continue;
      d[x][y]=d[p.F][p.S]+1;
      que.push(P(x,y));
    }
  }
  bool f=1;
  REP(i,1,v.size()) {
    if(d[v[0].F][v[0].S]>=d[v[i].F][v[i].S]) f=0;
  }
  if(f) pr("Yes");
  else pr("No");
}

int main(){ios::sync_with_stdio(0);cin.tie(0);Main();return 0;}