oj.uz

Submission #205081

# Submission time Handle Problem Language Result Execution time Memory
205081 2020-02-27T20:51:01 Z moonrabbit2 Round words (IZhO13_rowords) C++17
100 / 100
 138 ms 126364 KB 
#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
typedef long long ll;
typedef long double db;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<db,db> pdb;
typedef tuple<int,int,int> tii;
typedef tuple<ll,ll,ll> tll;
typedef tuple<int,int,int,int> ti4;
typedef vector<vector<ll>> mat;
const ll mod=998244353,inf=1e18;
const int N=2005,M=1e6+5,K=1e5+5;
string s,t;
int n,m,k,V[N][2*N],H[N][2*N],ans[N][2*N],D[N][2*N],A[2*N],res;
void solve(){
    memset(V,0,sizeof(V));
    memset(H,0,sizeof(H));
    memset(ans,0,sizeof(ans));
    memset(D,0,sizeof(D));
    memset(A,0,sizeof(A));
    for(int i=1;i<=m;i++) H[0][i]=i;
    for(int i=1;i<=n;i++) for(int j=1;j<=m;j++){
        if(s[i]==t[j]){
            H[i][j]=V[i][j-1];
            V[i][j]=H[i-1][j];
        } else{
            H[i][j]=max(V[i][j-1],H[i-1][j]);
            V[i][j]=min(V[i][j-1],H[i-1][j]);
        }
    }
    D[0][0]=1;
    for(int i=1;i<=m;i++){
        assert(H[n][i]<=i);
        if(H[n][i]==0) D[0][i]=1;
        else A[H[n][i]]=i;
    }
    for(int i=1;i<=m;i++){
        for(int j=0;j<=m;j++) if(i-1!=j) D[i][j]=D[i-1][j];
        D[i][A[i]]=1;
    }
    for(int i=0;i<k;i++) 
        for(int j=i+1;j<=m;j++) ans[i][j]=ans[i][j-1]+D[i][j];
    for(int i=1;i<=k;i++) res=max(res,ans[i-1][i+k-1]);
}
int main(){
	ios::sync_with_stdio(false); cin.tie(0);
    cin>>s>>t;
    n=s.size(); k=t.size(); m=2*k; s=" "+s; t=" "+t+t;
    solve();
    reverse(t.begin()+1,t.begin()+1+m);
    solve();
    cout<<res;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 126200 KB Output is correct
2 Correct 94 ms 126332 KB Output is correct
3 Correct 95 ms 126244 KB Output is correct
4 Correct 93 ms 126272 KB Output is correct
5 Correct 93 ms 126200 KB Output is correct
6 Correct 97 ms 126200 KB Output is correct
7 Correct 130 ms 126200 KB Output is correct
8 Correct 121 ms 126200 KB Output is correct
9 Correct 124 ms 126204 KB Output is correct
10 Correct 129 ms 126328 KB Output is correct
11 Correct 134 ms 126328 KB Output is correct
12 Correct 123 ms 126280 KB Output is correct
13 Correct 132 ms 126276 KB Output is correct
14 Correct 131 ms 126328 KB Output is correct
15 Correct 138 ms 126364 KB Output is correct
16 Correct 123 ms 126200 KB Output is correct
17 Correct 115 ms 126332 KB Output is correct
18 Correct 129 ms 126200 KB Output is correct
19 Correct 129 ms 126328 KB Output is correct
20 Correct 124 ms 126200 KB Output is correct
21 Correct 97 ms 126200 KB Output is correct
22 Correct 104 ms 126200 KB Output is correct
23 Correct 108 ms 126200 KB Output is correct
24 Correct 107 ms 126200 KB Output is correct
25 Correct 115 ms 126200 KB Output is correct