Submission #933901

# Submission time Handle Problem Language Result Execution time Memory
933901 2024-02-26T14:42:30 Z De3b0o Virus Experiment (JOI19_virus) C++14
6 / 100
2000 ms 10284 KB
#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define in insert
#define er erase
#define pb push_back
#define ppb pop_back()
#define ph push
#define pp pop()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "YES" << "\n";
#define no cout << "NO" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007
#define mid ((l+r)/2)
#define lc (2*n)
#define rc (2*n+1)

using namespace std;

ll fp(ll x , ll y)
{
    if(y==0)
        return 1;
    ll z = fp(x,y/2);
    if(y&1)
        return z*z*x;
    else
        return z*z;
}

int sqrot(ll x)
{
    int l = 0 , r = INT_MAX;
    while(l<=r)
    {
        if(mid*mid>=x)
            r=mid-1;
        else
            l=mid+1;
    }
    return r+1;
}

ll cel(ll x , ll y)
{
    return x/y + bool(x/y);
}

string tb(ll x)
{
    string s = "";
    while(x>0)
    {
        if(x&1)
            s+='1';
        else
            s+='0';
        x/=2;
    }
    while(s.size()<4)
        s+='0';
    return s;
}

ll fb(string s)
{
    ll x = 0;
    ll c = 1;
    for(int8_t i = 0 ; 60>i ; i++)
    {
        if(s[i]=='1')
            x+=c;
        c*=2;
    }
    return x;
}

int main()
{
    d3
    int m;
    int16_t r,c;
    string d;
    cin >> m >> r >> c;
    cin >> d;
    int a[r+1][c+1];
    int b[2][2][2][2];
    for(int16_t i = 1 ; r>=i ; i++)
        for(int16_t j = 1 ; c>=j ; j++)
        {
            cin >> a[i][j];
            if(a[i][j]==0)
                a[i][j]=1e5+1;
        }
    d+=d;
    for(int8_t i = 1 ; 16>=i ; i++)
    {
        string s = tb(i);
        bool l1 = 0 , l2 = 0 , l3 = 0 , l4 = 0;
        if(s[0]=='1')
            l1=1;
        if(s[1]=='1')
            l2=1;
        if(s[2]=='1')
            l3=1;
        if(s[3]=='1')
            l4=1;
        int lon = 0;
        int cur = 0;
        for(int j = 0 ; d.size()>j ; j++)
        {
            if((d[j]=='S'&&l1)||(d[j]=='N'&&l2)||(d[j]=='E'&&l3)||(d[j]=='W'&&l4))
            {
                cur++;
                continue;
            }
            lon=max(lon,cur);
            cur=0;
        }
        lon=max(lon,cur);
        if(lon==2*m)
            lon=1e5;
        b[l1][l2][l3][l4]=lon;
        //cout << l1 << " " << l2 << " " << l3 << " " << l4 << " " << b[l1][l2][l3][l4] << "\n";
    }
    int mn = 1e6;
    int ans = 0;
    pair<int,int> A[r*c];
    for(int i = 1 ; r>=i ; i++)
        for(int j = 1 ; c>=j ; j++)
            A[(i-1)*c+j-1]={i,j};
    random_shuffle(A,A+r*c);
    bool infected[r+2][c+2];
    bool tak[r+1][c+1];
    memset(tak,0,sizeof(tak));
    for(int iiii = 0 ; r*c>iiii ; iiii++)
    {
        int16_t x = A[iiii].F;
        int16_t y = A[iiii].S;
        if(a[x][y]>1e5)
            continue;
        memset(infected,0,sizeof(infected));
        queue<pair<int16_t,int16_t>> q;
        q.push({x,y});
        bool ge = 0;
        int mn1 = 0;
        while(!q.empty())
        {
            pair<int16_t,int16_t> nod = q.front();
            q.pop();
            if(infected[nod.F][nod.S])
                continue;
            infected[nod.F][nod.S]=1;
            mn1++;
            if(mn1>mn)
                break;
            for(int8_t ii = 0 ; 4>ii ; ii++)
            {
                int16_t xx = nod.F , yy = nod.S;
                if(ii==1)
                    xx++;
                else if(ii==2)
                    xx--;
                else if(ii==3)
                    yy++;
                else
                    yy--;
                if(xx<1||xx>r||yy<1||yy>c||infected[xx][yy])
                    continue;
                bool l1 = 0 , l2 = 0 , l3 = 0 , l4 = 0;
                if(infected[xx+1][yy])
                    l1=1;
                if(infected[xx-1][yy])
                    l2=1;
                if(infected[xx][yy+1])
                    l3=1;
                if(infected[xx][yy-1])
                    l4=1;
                if(b[l1][l2][l3][l4]>=a[xx][yy])
                {
                    if(tak[xx][yy])
                    {
                        ge=1;
                        break;
                    }
                    q.push({xx,yy});
                }
            }
            if(ge)
                break;
        }
        tak[x][y]=1;
        if(ge)
            continue;
        if(mn1==mn)
            ans++;
        if(mn1<mn)
        {
            //cout << mn1 << " " << x << " " << y << "\n";
            ans=1;
            mn=mn1;
        }
    }
    cout << mn << "\n" << ans*mn;
}

Compilation message

virus.cpp: In function 'int main()':
virus.cpp:115:33: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  115 |         for(int j = 0 ; d.size()>j ; j++)
      |                         ~~~~~~~~^~
# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Execution timed out 2072 ms 10284 KB Time limit exceeded
3 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 6 ms 860 KB Output is correct
3 Correct 21 ms 860 KB Output is correct
4 Correct 4 ms 912 KB Output is correct
5 Correct 22 ms 860 KB Output is correct
6 Correct 22 ms 856 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 22 ms 860 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 3 ms 860 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 21 ms 860 KB Output is correct
14 Correct 21 ms 884 KB Output is correct
15 Correct 20 ms 860 KB Output is correct
16 Correct 20 ms 860 KB Output is correct
17 Correct 11 ms 720 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 22 ms 860 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Execution timed out 2072 ms 10284 KB Time limit exceeded
3 Halted 0 ms 0 KB -