#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N;
ll A[202020];

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N;
	FOR(i,N) cin>>A[i+1];
	while(1) {
		ll sum=0;
		for(i=1;i<=N;i++) {
			sum+=A[i];
			if(A[i]==i) {
				A[i]=0;
				ll add=1;
				for(j=i-1;j>=1;j--) {
					A[j]+=add;
					add+=A[j]/j;
					A[j]%=j;
				}
				break;
			}
		}
		
		if(i==N+1) {
			if(sum==0) cout<<"Yes"<<endl;
			else cout<<"No"<<endl;
			return;
		}
	}
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}