WA on #5 #10

#include<bits/stdc++.h>
using namespace std;
int T,L,len,O,sum,ans,FE,f[100005];
string str,x,y;
bool b,bol;
char ch,z;
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>T;
	while(T--){
		cin>>L>>str;
		O=0;
		if(str=="O(1)"){
			O=0;
		}else{
			for(int i=0;i<str.length();i++){
				if(str[i]>='0'&&str[i]<='9'){
					O=O*10+str[i]-'0';
				}
			}
		}
		FE=sum=ans=0;
		b=1;
		bol=1;
		memset(f,0,sizeof(f));
		while(L--){
			cin>>ch;
			if(ch=='F'){
				FE++;
				cin>>z>>x>>y;
				f[z]++;
				if(f[z]>1){
					b=0;
					sum=0;
					memset(f,0,sizeof(f));
				}
				if(x=="n"&&y=="n"){
					continue;
				}else if(x[0]>='0'&&x[0]<='9'){
					if(y[0]>='0'&&y[0]<='9'){
						if(x>y){
							bol=0;
						}
						continue;
					}else if(y=="n"&&bol){
						sum++;
					}
				}else if(y[0]>='0'&&y[0]<='9'&&x=="n"){
					bol=0;
				}else{
					continue;
				}
			}else{
				FE--;
				if(FE<0){
					b=0;
					sum=0;
					memset(f,0,sizeof(f));
				}
				bol=1;
				memset(f,0,sizeof(f));
				ans=max(ans,sum);
				sum=0;
			}
		}
		if(!b){
			cout<<"ERR\n";
		}
		if(FE>0&&b){
			cout<<"ERR\n";
		}
		if(FE==0&&ans==O&&b){
			cout<<"Yes\n";
		}else if(FE==0&&b){
			cout<<"No\n";
		}
	}
	return 0;
}