oj.uz

Submission #556952

# Submission time Handle Problem Language Result Execution time Memory
556952 2022-05-04T12:30:53 Z urosk Nautilus (BOI19_nautilus) C++14
100 / 100
 189 ms 724 KB 
// __builtin_popcount(x) broj bitova
// __builtin_popcountll(x)
// __builtin_clz(x) vodece nule
// __builtin_clzll(x)
// __builtin_ctz(x) nule na pocetku
// __builtin_ctzll(x)
// 2000000011
// 2000000033
#include "bits/stdc++.h"
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll int
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) ((ll)(a.size()))
#define all(a) a.begin(),a.end()
#define rall(a) a.begin(),a.end(),greater<int>()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}
#define pi 3.14159265358979323846
#define here cerr<<"=============================================================================\n"
#define ceri(a,l,r) {for(ll i = l;i<=r;i++) cerr<<a[i]<< " ";cerr<<endl;}
#define ceri2(a,l,r,n,m) {for(ll i = l;i<=r;i++){for(ll j = n;j<=m;j++) cerr<<a[i][j]<< " ";cerr<<endl;}}
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
using namespace std;
using namespace __gnu_pbds;

typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}

void setIO(string inoutname)
{
	freopen((inoutname+".in").c_str(),"r",stdin);
    	freopen((inoutname+".out").c_str(),"w",stdout);
}
#define mod 1
ll gcd(ll a, ll b)
{
   if(b==0) return a;
   if(a==0) return b;
   if(a>=b)  return gcd(a%b,b);
   return  gcd(a,b%a);
}
ll lcm(ll a,ll b){
   return (a/gcd(a,b))*b;
}
ll add(ll x,ll y){
    x+=y;
    if(x<0){
        x%=mod;
        x+=mod;
    }else{
        if(x>=mod) x%=mod;
    }
    return x;
}
ll mul(ll a,ll b){
	ll ans = (a*b)%mod;
	if(ans<0) ans+=mod;
	return ans;
}
ll po(ll x,ll y){
    if(y==0) return 1LL;
    ll ans = po(x,y/2);
    ans = mul(ans,ans);
    if(y&1) ans = mul(ans,x);
    return ans;
}
ll inv(ll x){return po(x,mod-2);}
#define maxn 505
#define maxk 5005
ll n,m,k;
bitset<maxn> a[maxn];
bitset<maxn> dp[maxn][2];
void tc(){
    cin >> n >> m >> k;
    for(ll i = 1;i<=n;i++){
        string s; cin >> s;
        for(ll j = 1;j<=m;j++){
            if(s[j-1]=='.') a[i][j] = 1;
        }
    }
    for(ll i = 1;i<=n;i++){
        for(ll j = 1;j<=m;j++){
            if(a[i][j]==1) dp[i][0][j] = 1;
        }
    }
    string s; cin >> s;
    for(ll ii = 1;ii<=k;ii++){
        char c = s[ii-1];
        ll e = ii&1;
        ll r = e^1;
        /*here;
        for(ll i = 1;i<=n;i++){
            for(ll j = 1;j<=m;j++){
                cerr<<dp[i][r][j]<< " ";
            }
            cerr<<endl;
        }*/
        for(ll i = 1;i<=n;i++){
            if(c=='N'){
                dp[i][e] = dp[i+1][r]&a[i];
            }else if(c=='S'){
                dp[i][e] = dp[i-1][r]&a[i];
            }else if(c=='E'){
                dp[i][e] = (dp[i][r]<<1)&a[i];
            }else if(c=='W'){
                dp[i][e] = (dp[i][r]>>1)&a[i];
            }else{
                dp[i][e] = ((dp[i][r]>>1)|(dp[i][r]<<1)|(dp[i-1][r])|(dp[i+1][r]))&a[i];
            }
        }
    }
    //here;
    ll ans = 0;
    for(ll i = 1;i<=n;i++){
        for(ll j = 1;j<=m;j++){
            if(dp[i][k&1][j]) ans++;
            //cerr<<dp[i][k&1][j]<< " ";
        }
        //cerr<<endl;
    }
    cout<<ans<<endl;
}
int main(){
	daj_mi_malo_vremena
	//setIO("lol");
	int t; t = 1;
	while(t--){
		tc();
	}
	return 0;
}
/*
5 9 2
...##....
..#.##..#
..#....##
.##...#..
....#....
WS
*/

Compilation message

nautilus.cpp: In function 'void setIO(std::string)':
nautilus.cpp:48:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |  freopen((inoutname+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:49:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |      freopen((inoutname+".out").c_str(),"w",stdout);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 82 ms 340 KB Output is correct
23 Correct 87 ms 672 KB Output is correct
24 Correct 79 ms 672 KB Output is correct
25 Correct 78 ms 672 KB Output is correct
26 Correct 77 ms 596 KB Output is correct
27 Correct 133 ms 716 KB Output is correct
28 Correct 135 ms 676 KB Output is correct
29 Correct 137 ms 672 KB Output is correct
30 Correct 134 ms 672 KB Output is correct
31 Correct 137 ms 596 KB Output is correct
32 Correct 189 ms 724 KB Output is correct
33 Correct 180 ms 672 KB Output is correct
34 Correct 177 ms 596 KB Output is correct
35 Correct 180 ms 672 KB Output is correct
36 Correct 178 ms 596 KB Output is correct