답안 #93725

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
93725 2019-01-10T22:44:33 Z nikolapesic2802 로봇 (APIO13_robots) C++14
30 / 100
33 ms 24568 KB
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>

#define ll long long
#define pb push_back
#define sz(x) (int)(x).size()
#define mp make_pair
#define f first
#define s second
#define all(x) x.begin(), x.end()

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;

template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>; ///find_by_order(),order_of_key()
template<class T1, class T2> ostream& operator<<(ostream& os, const pair<T1,T2>& a) { os << '{' << a.f << ", " << a.s << '}'; return os; }
template<class T> ostream& operator<<(ostream& os, const vector<T>& a){os << '{';for(int i=0;i<sz(a);i++){if(i>0&&i<sz(a))os << ", ";os << a[i];}os<<'}';return os;}
template<class T> ostream& operator<<(ostream& os, const set<T>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
template<class T> ostream& operator<<(ostream& os, const multiset<T>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
template<class T1,class T2> ostream& operator<<(ostream& os, const map<T1,T2>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
const int N=9;
const int H=500;
const int maxDist=H;
int n,h,w;
vector<int> dx={-1,0,1,0},dy={0,1,0,-1};
pair<int,int> dest[H][H][4],null={-1,-1};
vector<string> board;
bool end(int i,int j)
{
    return i<0||i>=h||j<0||j>=w||board[i][j]=='x';
}
void sub(int &a,int b)
{
    a-=b;
    if(a<0)
        a+=4;
}
void add(int &a,int b)
{
    a+=b;
    if(a>=4)
        a-=4;
}
pair<int,int> dfs(int i,int j,int p)
{
    int pp=p;
    if(dest[i][j][p]!=null)
        return dest[i][j][p];
    if(end(i,j))
        return dest[i][j][p]=make_pair(i,j);
    if(board[i][j]=='A')
        sub(p,1);
    if(board[i][j]=='C')
        add(p,1);
    i+=dx[p];
    j+=dy[p];
    if(end(i,j))
        return dest[i-dx[p]][j-dy[p]][pp]=make_pair(i-dx[p],j-dy[p]);
    return dest[i-dx[p]][j-dy[p]][pp]=dfs(i,j,p);
}
vector<vector<vector<int> > > dp;
vector<vector<int> > initial_dp(H,vector<int>(H,(int)1e9));
int mask[H][H];
vector<pair<int,int> > q[maxDist];
void update(int k,int x,int y,int d)
{
    if(d<dp[k][x][y])
    {
        dp[k][x][y]=d;
        q[d].pb({x,y});
    }
}
void bfs(int k)
{
    for(int i=0;i<maxDist;i++)
        for(auto p:q[i])
            if(dp[k][p.f][p.s]>=i)
                for(int l=0;l<4;l++)
                    update(k,dest[p.f][p.s][l].f,dest[p.f][p.s][l].s,i+1);
}
int main()
{
    for(int i=0;i<H;i++)
        for(int j=0;j<H;j++)
            for(int k=0;k<4;k++)
                dest[i][j][k]=null;
    int t=(int)clock();
	scanf("%i %i %i",&n,&h,&w);
	swap(h,w);
	board.resize(h);
	for(int i=0;i<h;i++)
        cin >> board[i];
    for(int i=0;i<h;i++)
        for(int j=0;j<w;j++)
            for(int k=0;k<4;k++)
                dfs(i,j,k);
    vector<pair<int,int> > pos(n);
    for(int i=0;i<h;i++)
        for(int j=0;j<w;j++)
        {
            int t=board[i][j]-'0';
            if(t>0&&t<10)
                pos[t-1]=make_pair(i,j);
        }
    for(int i=0,k=0;i<n;i++)
    {
        for(int j=i;j>=0;j--,k++)
        {
            mask[j][i]=k;
            dp.pb(initial_dp);
            if(j==i)
                update(k,pos[j].f,pos[j].s,0);
            else
                for(int x=0;x<h;x++)
                    for(int y=0;y<w;y++)
                        for(int l=j;l<i;l++)
                            update(k,x,y,dp[mask[j][l]][x][y]+dp[mask[l+1][i]][x][y]);
            bfs(k);
            for(int l=0;l<maxDist;l++)
                q[l].clear();
        }
    }
    int ans=1e9;
    for(int x=0;x<h;x++)
        for(int y=0;y<w;y++)
            ans=min(ans,dp[mask[0][n-1]][x][y]);
    if(ans==(int)1e9)
        printf("-1\n");
    else
        printf("%i\n",ans);
    return 0;
}

Compilation message

robots.cpp: In function 'int main()':
robots.cpp:90:9: warning: unused variable 't' [-Wunused-variable]
     int t=(int)clock();
         ^
robots.cpp:91:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i %i",&n,&h,&w);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 11 ms 12152 KB Output is correct
3 Correct 11 ms 12152 KB Output is correct
4 Correct 12 ms 12212 KB Output is correct
5 Correct 11 ms 12152 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 11 ms 12152 KB Output is correct
3 Correct 11 ms 12152 KB Output is correct
4 Correct 12 ms 12212 KB Output is correct
5 Correct 11 ms 12152 KB Output is correct
6 Correct 11 ms 12152 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct
8 Correct 11 ms 12156 KB Output is correct
9 Correct 11 ms 12152 KB Output is correct
10 Correct 11 ms 12152 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 11 ms 12152 KB Output is correct
3 Correct 11 ms 12152 KB Output is correct
4 Correct 12 ms 12212 KB Output is correct
5 Correct 11 ms 12152 KB Output is correct
6 Correct 11 ms 12152 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct
8 Correct 11 ms 12156 KB Output is correct
9 Correct 11 ms 12152 KB Output is correct
10 Correct 11 ms 12152 KB Output is correct
11 Runtime error 33 ms 24568 KB Execution killed with signal 11 (could be triggered by violating memory limits)
12 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 11 ms 12152 KB Output is correct
3 Correct 11 ms 12152 KB Output is correct
4 Correct 12 ms 12212 KB Output is correct
5 Correct 11 ms 12152 KB Output is correct
6 Correct 11 ms 12152 KB Output is correct
7 Correct 11 ms 12152 KB Output is correct
8 Correct 11 ms 12156 KB Output is correct
9 Correct 11 ms 12152 KB Output is correct
10 Correct 11 ms 12152 KB Output is correct
11 Runtime error 33 ms 24568 KB Execution killed with signal 11 (could be triggered by violating memory limits)
12 Halted 0 ms 0 KB -