Submission #991732

#	Time	Username	Problem	Language	Result	Execution time	Memory
991732		vjudge1	Robots (APIO13_robots)	C++17	0 / 100	0 ms	348 KiB

robots

//~~~~~~~~~~~~~MJ®™~~~~~~~~~~~~~
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#define rep1(n) for(ll i=0; i<(ll)(n); ++i)
#define rep2(i,n) for(ll i=0; i<(ll)(n); ++i)
#define rep3(i,a,b) for(ll i=(ll)(a); i<(ll)(b); ++i)
#define rep4(i,a,b,c) for(ll i=(ll)(a); i<(ll)(b); i+=(c))
#define cut4(a,b,c,d,e,...) e
#define rep(...) cut4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)
#define per1(n) for(ll i=((ll)n)-1; i>=0; --i)
#define per2(i,n) for(ll i=((ll)n)-1; i>=0; --i)
#define per3(i,a,b) for(ll i=((ll)a)-1; i>=(ll)(b); --i)
#define per4(i,a,b,c) for(ll i=((ll)a)-1; i>=(ll)(b); i-=(c))
#define per(...) cut4(__VA_ARGS__,per4,per3,per2,per1)(__VA_ARGS__)
#define ll long long
#define ln cout<<endl
#define int long long
#define Code ios_base::sync_with_stdio(0);
#define by cin.tie(NULL);
#define Hayan cout.tie(NULL);
#define append push_back
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(),(x).rend()
#define vi vector<int>
#define yes cout<<"YES"<<endl;
#define no cout<<"NO"<<endl;
#define vb vector<bool>
#define vv vector<vi>
#define vp vector<pi>
#define ul map<int,vi>
#define ub map<int,bool>
#define ui map<int,int>
#define sum(a) accumulate(all(a),0)
#define add insert
#define endl '\n' 
#define pi pair<int,int>
#define ff first
#define ss second
using namespace std;
int n,k,e;
vector<string> s,cp;
int merge(pi a, pi b)
{
    int x,y;

    x=a.ff,y=a.ss;
    while (y+1<k and s[x][y+1]=='.')
    {
        y++;
    }
    if  (y+1<k and (s[x][y+1]=='1' or (s[x][y+1]=='2')))
    {
        return 1;
    }
    cp=s;
    
    cp[x][y]='-';
    x=a.ff,y=a.ss;
    cp[x][y]='-';

    while (y-1>=0 and s[x][y-1]=='.')
    {
        y--;
    }
    if  (y-1>=0 and (s[x][y-1]=='1' or (s[x][y-1]=='2')))
    {
        return 1;
    }
    cp[x][y]='-';
    
    x=a.ff,y=a.ss;
    while (x+1<e and s[x+1][y]=='.')
    {
        x++;
    }
    if  (x+1<e and (s[x+1][y]=='1' or (s[x+1][y]=='2')))
    {
        return 1;
    }
    cp[x][y]='-';
    
    x=a.ff,y=a.ss;
    while (x-1>=0 and s[x-1][y]=='.')
    {
        x--;
    }
    if  (x-1>=0 and (s[x-1][y]=='1' or (s[x-1][y]=='2')))
    {

        // cout<<a.ff<<" "<<a.ss<<" ";
        // cout<<x-1<<" "<<" "<<y;
        return 1;
    // cout<<" hayan";
    }
    cp[x][y]='-';
    for (int i=b.ff;i<e;i++)
    {
        if (cp[i][b.ss]=='x'){break;}
        else if (cp[i][b.ss]=='-')
        {
            return 2;
        }
    }
    for (int i=b.ff;i>=0;i--)
    {
        if (cp[i][b.ss]=='x'){break;}
        else if (cp[i][b.ss]=='-')
        {
            return 2;
        }
    }
    for (int i=b.ss;i<k;i++)
    {
        if (cp[b.ff][i]=='x'){break;}
        else if (cp[b.ff][i]=='-')
        {
            return 2;
        }
    }
    for (int i=b.ss;i>=0;i--)
    {
        if (cp[b.ff][i]=='x'){break;}
        else if (cp[b.ff][i]=='-')
        {
            return 2;
        }
    }
    return 3;
}
void solve()
{
    cin>>n>>k>>e;
    string t;
    // vi a;
    pi a,b;
    rep(e){cin>>t;s.append(t);}
    rep(e)
    {
        rep(j,0,k)
        {
            if (s[i][j]=='2')
            {
                b={i,j};
            }
            if (s[i][j]=='1')
            {
                // cout<<i<<" "<<j<<endl;
                a={i,j};
            }
        }
    }
    int ans=min(merge(a,b),merge(b,a));    
    if (ans==3)
    {
        cout<<-1;
    }
    else {
        cout<<ans;
    }


    // for (auto i: a){cout<<i<<" ";}
}
signed main(){
    Code by Hayan
    int ans=1;
    //cout<<setprecision(1000);
    // cin>>ans;
    while(ans--){
        // cout << "Case #" << ans << ": \n";
        solve();ln;}}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40