#include <bits/stdc++.h>
using namespace std;
const int maxn=2e5+10;
int st[maxn],tt=0;
int main(){
int n,k,op,curv,ans=0,cnt=0;
scanf("%d",&n);
while(n--){
scanf("%d",&op);
if(op==1){
scanf("%d",&curv);
}
else if(op==2){
ans+=cnt;
cnt=0;
}
else if(op==3){
scanf("%d",&st[++tt]);
}
else if(op==4) cnt=0;
else if(op==5) tt=0;
else cnt++;
while(tt&&st[tt]<curv){
ans++;
tt--;
}
}
printf("%d",ans);
}
1356. Sort Integers by The Number of 1 Bits | 922. Sort Array By Parity II |
344. Reverse String | 1047. Remove All Adjacent Duplicates In String |
977. Squares of a Sorted Array | 852. Peak Index in a Mountain Array |
461. Hamming Distance | 1748. Sum of Unique Elements |
897. Increasing Order Search Tree | 905. Sort Array By Parity |
1351. Count Negative Numbers in a Sorted Matrix | 617. Merge Two Binary Trees |
1450. Number of Students Doing Homework at a Given Time | 700. Search in a Binary Search Tree |
590. N-ary Tree Postorder Traversal | 589. N-ary Tree Preorder Traversal |
1299. Replace Elements with Greatest Element on Right Side | 1768. Merge Strings Alternately |
561. Array Partition I | 1374. Generate a String With Characters That Have Odd Counts |
1822. Sign of the Product of an Array | 1464. Maximum Product of Two Elements in an Array |
1323. Maximum 69 Number | 832. Flipping an Image |
1295. Find Numbers with Even Number of Digits | 1704. Determine if String Halves Are Alike |
1732. Find the Highest Altitude | 709. To Lower Case |
1688. Count of Matches in Tournament | 1684. Count the Number of Consistent Strings |