oj.uz

Submission #229715

# Submission time Handle Problem Language Result Execution time Memory
229715 2020-05-06T02:56:17 Z rrrr10000 Zoo (COCI19_zoo) C++14
110 / 110
 115 ms 17016 KB 
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n)  for(long long i=0;i<(long long)(n);i++)
#define REP(i,k,n) for(long long i=k;i<(long long)(n);i++)
#define all(a) a.begin(),a.end()
#define pb emplace_back
#define eb emplace_back
#define lb(v,k) (lower_bound(all(v),k)-v.begin())
#define ub(v,k) (upper_bound(all(v),k)-v.begin())
#define fi first
#define se second
#define pi M_PI
#define PQ(T) priority_queue<T>
#define SPQ(T) priority_queue<T,vector<T>,greater<T>>
#define dame(a) {out(a);return 0;}
#define decimal cout<<fixed<<setprecision(15);
#define dupli(a) a.erase(unique(all(a)),a.end())
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef tuple<ll,ll,ll,ll> PPP;
typedef multiset<ll> S;
using vi=vector<ll>;
using vvi=vector<vi>;
using vvvi=vector<vvi>;
using vvvvi=vector<vvvi>;
using vp=vector<P>;
using vvp=vector<vp>;
using vb=vector<bool>;
using vvb=vector<vb>;
const ll inf=1001001001001001001;
const ll INF=1001001001;
const ll mod=1000000007;
const double eps=1e-10;
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<'\n';}
template<class T> void outvp(T v){rep(i,v.size())cout<<'('<<v[i].fi<<','<<v[i].se<<')';cout<<'\n';}
template<class T> void outvvp(T v){rep(i,v.size())outvp(v[i]);}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<'\n';}
template<class T> void outvv(T v){rep(i,v.size())outv(v[i]);}
template<class T> bool isin(T x,T l,T r){return (l)<=(x)&&(x)<=(r);}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void noyes(T b){if(b)out("no");else out("yes");}
template<class T> void NoYes(T b){if(b)out("No");else out("Yes");}
template<class T> void NOYES(T b){if(b)out("NO");else out("YES");}
void outs(ll a,ll b){if(a>=inf-100)out(b);else out(a);}
ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
ll modpow(ll a,ll b){a%=mod;if(b==0)return 1;if(b&1)return a*modpow(a,b-1)%mod;ll k=modpow(a,b/2);return k*k%mod;}

int main(){
    vi dx={0,0,1,-1},dy={1,-1,0,0};
    ll n,m;cin>>n>>m;
    vvi v(n,vi(m));
    rep(i,n){
        string s;cin>>s;
        rep(j,m){
            if(s[j]=='T')v[i][j]=1;
            else if(s[j]=='B')v[i][j]=2;
        }
    }
    vvi dis(n,vi(m,inf));
    deque<P> q;
    q.pb(0,0);
    dis[0][0]=0;
    ll ans=1;
    while(!q.empty()){
        auto t=q.front();q.pop_front();
        ll x=t.fi,y=t.se;
        chmax(ans,dis[x][y]+1);
        rep(i,4){
            ll nx=x+dx[i],ny=y+dy[i];
            if(isin(nx,0ll,n-1)&&isin(ny,0ll,m-1)){
                if(v[nx][ny]){
                    if(chmin(dis[nx][ny],dis[x][y]+abs(v[x][y]-v[nx][ny]))){
                        if(v[nx][ny]!=v[x][y])q.pb(nx,ny);
                        else q.emplace_front(nx,ny);
                    }
                }
            }
        }
    }
    out(ans);
}

Subtask #1
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 6 ms 512 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 6 ms 512 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 63 ms 16504 KB Output is correct
17 Correct 64 ms 16248 KB Output is correct
18 Correct 66 ms 17016 KB Output is correct
19 Correct 68 ms 16760 KB Output is correct
20 Correct 64 ms 16376 KB Output is correct
21 Correct 108 ms 15736 KB Output is correct
22 Correct 107 ms 15612 KB Output is correct
23 Correct 109 ms 16096 KB Output is correct
24 Correct 115 ms 16760 KB Output is correct
25 Correct 112 ms 16376 KB Output is correct
26 Correct 110 ms 16248 KB Output is correct
27 Correct 109 ms 15736 KB Output is correct
28 Correct 107 ms 15736 KB Output is correct
29 Correct 114 ms 16504 KB Output is correct
30 Correct 111 ms 16380 KB Output is correct