답안 #93724 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
93724	2019-01-10T22:43:57 Z	nikolapesic2802	로봇 (APIO13_robots)	C++14	100 / 100	943 ms	103448 KB

robots

#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*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);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	18040 KB	Output is correct
2	Correct	19 ms	18040 KB	Output is correct
3	Correct	20 ms	17992 KB	Output is correct
4	Correct	17 ms	18040 KB	Output is correct
5	Correct	20 ms	18040 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	18040 KB	Output is correct
2	Correct	19 ms	18040 KB	Output is correct
3	Correct	20 ms	17992 KB	Output is correct
4	Correct	17 ms	18040 KB	Output is correct
5	Correct	20 ms	18040 KB	Output is correct
6	Correct	17 ms	18040 KB	Output is correct
7	Correct	16 ms	18040 KB	Output is correct
8	Correct	16 ms	18040 KB	Output is correct
9	Correct	17 ms	17988 KB	Output is correct
10	Correct	17 ms	18040 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	18040 KB	Output is correct
2	Correct	19 ms	18040 KB	Output is correct
3	Correct	20 ms	17992 KB	Output is correct
4	Correct	17 ms	18040 KB	Output is correct
5	Correct	20 ms	18040 KB	Output is correct
6	Correct	17 ms	18040 KB	Output is correct
7	Correct	16 ms	18040 KB	Output is correct
8	Correct	16 ms	18040 KB	Output is correct
9	Correct	17 ms	17988 KB	Output is correct
10	Correct	17 ms	18040 KB	Output is correct
11	Correct	204 ms	64760 KB	Output is correct
12	Correct	27 ms	16760 KB	Output is correct
13	Correct	96 ms	43196 KB	Output is correct
14	Correct	299 ms	72292 KB	Output is correct
15	Correct	165 ms	61560 KB	Output is correct

Subtask #4
40.0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	18040 KB	Output is correct
2	Correct	19 ms	18040 KB	Output is correct
3	Correct	20 ms	17992 KB	Output is correct
4	Correct	17 ms	18040 KB	Output is correct
5	Correct	20 ms	18040 KB	Output is correct
6	Correct	17 ms	18040 KB	Output is correct
7	Correct	16 ms	18040 KB	Output is correct
8	Correct	16 ms	18040 KB	Output is correct
9	Correct	17 ms	17988 KB	Output is correct
10	Correct	17 ms	18040 KB	Output is correct
11	Correct	204 ms	64760 KB	Output is correct
12	Correct	27 ms	16760 KB	Output is correct
13	Correct	96 ms	43196 KB	Output is correct
14	Correct	299 ms	72292 KB	Output is correct
15	Correct	165 ms	61560 KB	Output is correct
16	Correct	282 ms	60508 KB	Output is correct
17	Correct	943 ms	103448 KB	Output is correct
18	Correct	336 ms	64724 KB	Output is correct
19	Correct	300 ms	60408 KB	Output is correct
20	Correct	581 ms	77656 KB	Output is correct

답안 #93724

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 20.0 / 20.0

Subtask #3 30.0 / 30.0

Subtask #4 40.0 / 40.0

Subtask #1
10.0 / 10.0

Subtask #2
20.0 / 20.0

Subtask #3
30.0 / 30.0

Subtask #4
40.0 / 40.0