Submission #340357

#	Time	Username	Problem	Language	Result	Execution time	Memory
340357		amunduzbaev	Round words (IZhO13_rowords)	C++14	36 / 100	2092 ms	16256 KiB

rowords

/** made by amunduzbaev **/
 
#include <bits/stdc++.h>
//~ #include <ext/pb_ds/assoc_container.hpp> 
//~ #include <ext/pb_ds/tree_policy.hpp> 
//~ #include <ext/rope>
 
//~ using namespace __gnu_pbds;
//~ using namespace __gnu_cxx;
using namespace std;
 
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define vll vector<ll>
#define vii vector<int>
#define vpii vector<pii>
#define vpll vector<pll>
#define cnt(a)__builtin_popcount(a)
template<class T> bool umin(T& a, const T& b) {return a > b? a = b, true:false;}
template<class T> bool umax(T& a, const T& b) {return a < b? a = b, true:false;}
 
//~ typedef tree<pii,null_type,less<pii>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
 
const int N = 2e3+5;
const int mod = 1e9+7;
const ll inf = 1e18;
const ld Pi = acos(-1);
int s, n, m, k, t, ans, dp[N][N];
 
void solve(){
	string a, b;
	cin>>a>>b;
	n = sz(b), m = sz(a);
	if(n > m){
		swap(n, m);
		swap(a, b);
	}
	
	b += b;
	for(int i=0;i<n;i++){
		string tmp = string(b.begin() + i, b.begin() + i+ n);
		memset(dp, 0, sizeof dp);
		for(int j=0;j<m;j++){
			for(int l=0;l<n;l++){
				if(j && l && a[j] == tmp[l]) dp[j][l] += dp[j-1][l-1] +1;
				else if(a[j] == tmp[l]) dp[j][l]++;
				if(j) umax(dp[j][l], dp[j-1][l]);
				if(l) umax(dp[j][l], dp[j][l-1]);
				if(j && l) umax(dp[j][l], dp[j-1][l-1]); 
			}
		}
		if(n * m * n >= 5e8){
			cout<<dp[m-1][n-1]<<"\n";
			return;
		}
		umax(ans, dp[m-1][n-1]);
	}
	reverse(all(b));
	
	for(int i=0;i<n;i++){
		string tmp = string(b.begin() + i, b.begin() + i+ n);
		memset(dp, 0, sizeof dp);
		for(int j=0;j<m;j++){
			for(int l=0;l<n;l++){
				if(j && l && a[j] == tmp[l]) dp[j][l] += dp[j-1][l-1] +1;
				else if(a[j] == tmp[l]) dp[j][l]++;
				if(j) umax(dp[j][l], dp[j-1][l]);
				if(l) umax(dp[j][l], dp[j][l-1]);
				if(j && l) umax(dp[j][l], dp[j-1][l-1]); 
			}
		}
		umax(ans, dp[m-1][n-1]);
	}
	
	
	cout<<ans<<endl;
	return;
}
 
int main(){
	fastios
	int t = 1;
	if(t) solve();
	else {
		cin>>t;
		while (t--) solve();
	}
	return 0;
}

• Subtask 1: 36 / 100