oj.uz

Submission #476512

# Submission time Handle Problem Language Result Execution time Memory
476512 2021-09-27T12:53:12 Z hackerbhaiya Round words (IZhO13_rowords) C++17
88 / 100
 108 ms 21956 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;
            else 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 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 10 ms 1996 KB Output is correct
7 Correct 28 ms 16076 KB Output is correct
8 Incorrect 64 ms 16128 KB Output isn't correct
9 Correct 84 ms 16128 KB Output is correct
10 Correct 67 ms 16076 KB Output is correct
11 Correct 69 ms 17716 KB Output is correct
12 Correct 47 ms 20648 KB Output is correct
13 Correct 99 ms 20640 KB Output is correct
14 Correct 83 ms 18380 KB Output is correct
15 Incorrect 92 ms 21956 KB Output isn't correct
16 Incorrect 87 ms 17740 KB Output isn't correct
17 Correct 67 ms 13516 KB Output is correct
18 Correct 108 ms 20920 KB Output is correct
19 Correct 63 ms 16196 KB Output is correct
20 Correct 98 ms 18840 KB Output is correct
21 Correct 31 ms 4624 KB Output is correct
22 Correct 48 ms 7700 KB Output is correct
23 Correct 69 ms 10464 KB Output is correct
24 Correct 88 ms 11084 KB Output is correct
25 Correct 90 ms 14668 KB Output is correct