oj.uz

Submission #476515

# Submission time Handle Problem Language Result Execution time Memory
476515 2021-09-27T13:03:37 Z hackerbhaiya Round words (IZhO13_rowords) C++14
88 / 100
 103 ms 21964 KB 
#include<bits/stdc++.h>
// #pragma GCC optimize("Ofast")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC optimization("unroll-loops")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC optimize("fast-math")
// #pragma GCC optimize("no-stack-protector")
// #define ll __int128
#define ll long long
// #define ll int
#define f(i,a,b) for(int i=a;i<b;i++)
#define mod 1000000007
// #define mod 998244353 
#define mp make_pair
#define uniq(v) (v).erase(unique(all(v)),(v).end())
#define ff first
#define ss second
#define rf(i,a,b) for(int i=a;i>=b;i--)
#define sc(a) scanf("%lld",&a)
#define pf printf
#define sz(a) (int)(a.size())
#define psf push_front
#define ppf pop_front
#define ppb pop_back
#define pb push_back
#define pq priority_queue
#define all(s) s.begin(),s.end()
#define sp(a) setprecision(a)
#define rz resize
#define ld long double
#define inf (ll)1e18
#define ub upper_bound
#define lb lower_bound
#define bs binary_search
#define eb emplace_back
const double pi = acos(-1);
ll binpow(ll a, ll b){ll res=1;while(b!=0){if(b&1)res*=a;a*=a;b>>=1;}return res;}
// ll binpow(ll a, ll b, ll md){ll res=1;a%=mod;while(b!=0){if(b&1)res*=a,res%=md;a*=a,a%=md;b>>=1;}return res%md;}
 
using namespace std;

vector<vector<int> > dp,dir;
string a,b;
int n,m;

void init()
{
    f(i,0,n)
    {
        f(j,0,m)
            dp[i][j]=dir[i][j]=0;
    }
    f(i,1,n)
    {
        f(j,1,m)
        {
            if(a[i]==b[j])
                dp[i][j]=1+dp[i-1][j-1],dir[i][j]=1;
            if(dp[i][j-1]>=dp[i-1][j] && dp[i][j]<=dp[i][j-1])
                dp[i][j]=dp[i][j-1],dir[i][j]=0;
            if(dp[i][j]<dp[i-1][j])
                dp[i][j]=dp[i-1][j],dir[i][j]=2;
        }
    }
}

int cal(int i, int j)
{
    int ans=0;
    while(i>0 && j>0)
    {
        if(i<0 || j<0)
            return ans;
        if(dir[i][j]==1)
            ans++,i--,j--;
        else if(dir[i][j]==0)
            j--;
        else
            i--;
    }
    return ans;
}

void update(int id)
{
    int i=id,j=1;
    while(j<m && dir[i][j]!=1)
        j++;
    if(j>=m)
        return;
    dir[i][j]=0;
    if(j==1)
        return;
    while(i<n-1 && j<m-1)
    {
        if(dir[i+1][j]==2)
            i++,dir[i][j]=0;
        else if(dir[i+1][j+1]==1)
            i++,j++,dir[i][j]=0;
        else
            j++;
    }
    while(i<n && j<m)
    {
        if(dir[i+1][j]==2)
            i++,dir[i][j]=0;
        else
            break;
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    // freopen("xortransform.in","r",stdin);
    // freopen("xortransform.out","w",stdout);
// #ifndef ONLINE_JUDGE
//     freopen("input.txt","r",stdin);
//     freopen("output.txt","w",stdout);
// #endif
    int z=1;
    // cin>>z;
    f(i,1,z+1)
    {
        //cout<<"Case #"<<i<<": ";
        cin>>a>>b;
        string tempa=a,tempb=b;
        int dif=sz(tempa);
        a="#"+tempa+tempa,b="$"+tempb;
        n=sz(a),m=sz(b);
        dp.rz(n,vector<int> (m)),dir.rz(n+1,vector<int> (m+1));
        init();
        int ans=cal(dif,m-1),cur=dif+1;
        f(i,2,n)
        {
            if(cur>=n)
                break;
            update(i-1);
            ans=max(ans,cal(cur,m-1)),cur++;
        }
        reverse(all(tempa));
        a="#"+tempa+tempa;
        init();
        ans=max(ans,cal(dif,m-1)),cur=dif+1;
        f(i,2,n)
        {
            if(cur>=n)
                break;
            update(i-1);
            ans=max(ans,cal(cur,m-1)),cur++;
        }
        cout<<ans<<"\n";
    }
}

Subtask #1
88.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 11 ms 2036 KB Output is correct
7 Correct 27 ms 16148 KB Output is correct
8 Incorrect 74 ms 16140 KB Output isn't correct
9 Correct 81 ms 16148 KB Output is correct
10 Correct 68 ms 16076 KB Output is correct
11 Correct 74 ms 17712 KB Output is correct
12 Correct 46 ms 20556 KB Output is correct
13 Correct 102 ms 20656 KB Output is correct
14 Correct 85 ms 18508 KB Output is correct
15 Incorrect 100 ms 21964 KB Output isn't correct
16 Incorrect 92 ms 17772 KB Output isn't correct
17 Correct 71 ms 13520 KB Output is correct
18 Correct 103 ms 20940 KB Output is correct
19 Correct 64 ms 16076 KB Output is correct
20 Correct 98 ms 18836 KB Output is correct
21 Correct 35 ms 4556 KB Output is correct
22 Correct 51 ms 7700 KB Output is correct
23 Correct 60 ms 10444 KB Output is correct
24 Correct 68 ms 11080 KB Output is correct
25 Correct 91 ms 14668 KB Output is correct