Submission #1751852
Source Code Expand
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace std; using namespace __gnu_pbds; #define fi first #define se second #define mp make_pair #define pb push_back #define fbo find_by_order #define ook order_of_key typedef long long ll; typedef pair<int,int> ii; typedef vector<int> vi; typedef long double ld; typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds; typedef set<int>::iterator sit; typedef map<int,int>::iterator mit; typedef vector<int>::iterator vit; int solve(string &s1, string &s2) { int n=s1.length(); int ans=0; int ptr=n-1; vector<ii> vec; for(int i=n-1;i>=0;i--) { if(s1[ptr]==s2[i]) { if(ptr==i) { ptr--; } continue; } ptr--; while(ptr>=0) { if(s1[ptr]==s2[i]) { break; } ptr--; } if(ptr<0) { return -1; } vec.pb(mp(ptr,i)); } int C = 0; vi L; deque<int> R; for(int i=0;i<n;i++) L.pb(0); for(int i=0;i<vec.size();i++) { int l=vec[i].fi; int r=vec[i].se; while(L.size()+R.size()>r+1) { if(!R.empty()) { ans=max(ans,R.back()+C); R.pop_back(); } else { ans=max(ans,L.back()); L.pop_back(); } } //element l must be in L. pick r - l + 1 - R.size() elements from left side for(int i=int(L.size()) - 1; i > int(L.size()) - (r - l + 1 - int(R.size())); i--) { R.push_front(L.back()-C); L.pop_back(); } L.pop_back(); R.pb(R.back()); C++; } for(int i=0;i<L.size();i++) ans=max(ans,L[i]); for(int i=0;i<R.size();i++) ans=max(ans,R[i]+C); return ans; } int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; string s1,s2; cin>>n>>s1>>s2; cout<<solve(s1,s2)<<'\n'; }
Submission Info
Submission Time | |
---|---|
Task | F - Shik and Copying String |
User | vjudge5 |
Language | C++14 (GCC 5.4.1) |
Score | 1500 |
Code Size | 1729 Byte |
Status | AC |
Exec Time | 38 ms |
Memory | 18064 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1500 / 1500 | ||||
Status |
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|
Set Name | Test Cases |
---|---|
Sample | example0.txt, example1.txt, example2.txt, example3.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, 032.txt, 033.txt, 034.txt, 035.txt, 036.txt, 037.txt, 038.txt, 039.txt, 040.txt, 041.txt, 042.txt, 043.txt, 044.txt, 045.txt, 046.txt, 047.txt, 048.txt, 049.txt, 050.txt, 051.txt, 052.txt, 053.txt, 054.txt, 055.txt, 056.txt, 057.txt, 058.txt, example0.txt, example1.txt, example2.txt, example3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 1 ms | 256 KB |
003.txt | AC | 1 ms | 256 KB |
004.txt | AC | 1 ms | 256 KB |
005.txt | AC | 1 ms | 256 KB |
006.txt | AC | 1 ms | 256 KB |
007.txt | AC | 1 ms | 256 KB |
008.txt | AC | 1 ms | 256 KB |
009.txt | AC | 1 ms | 256 KB |
010.txt | AC | 1 ms | 256 KB |
011.txt | AC | 1 ms | 256 KB |
012.txt | AC | 1 ms | 256 KB |
013.txt | AC | 1 ms | 256 KB |
014.txt | AC | 1 ms | 256 KB |
015.txt | AC | 1 ms | 256 KB |
016.txt | AC | 1 ms | 256 KB |
017.txt | AC | 1 ms | 256 KB |
018.txt | AC | 1 ms | 256 KB |
019.txt | AC | 1 ms | 256 KB |
020.txt | AC | 1 ms | 256 KB |
021.txt | AC | 1 ms | 256 KB |
022.txt | AC | 1 ms | 256 KB |
023.txt | AC | 1 ms | 256 KB |
024.txt | AC | 1 ms | 256 KB |
025.txt | AC | 11 ms | 7448 KB |
026.txt | AC | 32 ms | 18064 KB |
027.txt | AC | 25 ms | 13844 KB |
028.txt | AC | 38 ms | 17424 KB |
029.txt | AC | 38 ms | 16016 KB |
030.txt | AC | 16 ms | 8344 KB |
031.txt | AC | 18 ms | 9624 KB |
032.txt | AC | 20 ms | 9496 KB |
033.txt | AC | 21 ms | 9752 KB |
034.txt | AC | 22 ms | 9880 KB |
035.txt | AC | 22 ms | 8984 KB |
036.txt | AC | 22 ms | 9752 KB |
037.txt | AC | 21 ms | 8856 KB |
038.txt | AC | 21 ms | 8088 KB |
039.txt | AC | 20 ms | 8344 KB |
040.txt | AC | 34 ms | 15120 KB |
041.txt | AC | 33 ms | 18064 KB |
042.txt | AC | 31 ms | 17680 KB |
043.txt | AC | 31 ms | 18064 KB |
044.txt | AC | 31 ms | 18064 KB |
045.txt | AC | 31 ms | 18064 KB |
046.txt | AC | 31 ms | 18064 KB |
047.txt | AC | 32 ms | 18064 KB |
048.txt | AC | 31 ms | 18064 KB |
049.txt | AC | 31 ms | 18064 KB |
050.txt | AC | 18 ms | 12436 KB |
051.txt | AC | 17 ms | 11796 KB |
052.txt | AC | 12 ms | 8216 KB |
053.txt | AC | 29 ms | 14100 KB |
054.txt | AC | 28 ms | 12948 KB |
055.txt | AC | 29 ms | 12820 KB |
056.txt | AC | 30 ms | 14484 KB |
057.txt | AC | 28 ms | 12436 KB |
058.txt | AC | 36 ms | 13972 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |
example2.txt | AC | 1 ms | 256 KB |
example3.txt | AC | 1 ms | 256 KB |