oj.uz

Submission #934835

# Submission time Handle Problem Language Result Execution time Memory
934835 2024-02-28T05:06:34 Z 8pete8 Robots (APIO13_robots) C++17
60 / 100
 161 ms 163840 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<cassert>
#include<limits.h>
#include<cmath>
#include<set>
#include<numeric> //gcd(a,b)
#include<algorithm>
#include<bitset> 
#include<stack>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define pppiiii pair<pii,pii>
#define ppii pair<int,pii>
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define pb push_back
//#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-loops")
#define int long long
const int mod=1e9+7,mxn=600,lg=30,inf=1e18,minf=-1e18,Mxn=2e6,root=700;
void setIO(string name){
	ios_base::sync_with_stdio(0); cin.tie(0);		
	freopen((name+".in").c_str(),"r",stdin);		
	freopen((name+".out").c_str(),"w",stdout);	
}	 
pii pos[10];
char grid[mxn+10][mxn+10];
int n,h,w;
int dist[mxn*mxn+10],go[mxn+10][mxn+10][4];
vector<int> dp[10][10];
vector<int>adj[mxn*mxn+10];
int get(int x,int y){
	return y+((x-1)*w);
}
int u[4]={1,0,-1,0},r[4]={0,-1,0,1};
bool valid(int x,int y){
	if(x<=0||x>h||y<=0||y>w)return false;
	if(grid[x][y]=='x')return false;
	return true;
}
struct node{
	int pos,stp;
	bool operator<(const node o)const{return stp>o.stp;}
};
int cnt=0;
vector<int>wtf[mxn*mxn+10];
void move(vector<int>&v){
	for(int i=1;i<=v.size();i++)if(v[i]<=h*w)wtf[v[i]].pb(i);
	for(int i=0;i<=h*w;i++){
		while(!wtf[i].empty()){
			int cur=wtf[i].back();
			wtf[i].pop_back();
			if(v[cur]<i)continue;
			for(auto j:adj[cur])if(v[j]>i+1&&i+1<=h*w){
				v[j]=i+1;
				if(v[j]>Mxn)assert(0);
				wtf[v[j]].pb(j);
			}
		}
		wtf[i].shrink_to_fit();
	}
	return;
}
int getnx(int x,int y,int di){
	if(grid[x][y]=='A')di--;
	else if(grid[x][y]=='C')di++;
	di=(di+4)%4;
	if(go[x][y][di])return go[x][y][di];
	int nx=x+u[di],ny=y+r[di];
	if(valid(nx,ny))return go[x][y][di]=getnx(nx,ny,di);
	return go[x][y][di]=get(x,y);
}
//41->21->11
void print(int i,int j){
	for(int x=1;x<=h;x++){
		for(int y=1;y<=w;y++)cout<<((dp[i][j][get(x,y)]==inf)?-1:dp[i][j][get(x,y)])<<" ";
		cout<<'\n';
	}
	cout<<'\n';
}
int32_t main(){
	fastio
	cin>>n>>w>>h;
	int ans=inf;
	for(int i=1;i<=n;i++)for(int j=1;j<=n;j++)dp[i][j].resize((h+1)*(w+1),inf);
	for(int i=1;i<=h;i++)for(int j=1;j<=w;j++){
		cin>>grid[i][j];
		if(grid[i][j]>='1'&&grid[i][j]<='9')pos[grid[i][j]-'0']={i,j};
	}
	for(int i=1;i<=h;i++)for(int j=1;j<=w;j++)for(int k=0;k<4;k++)adj[get(i,j)].pb(getnx(i,j,k));
	for(int i=1;i<=n;i++){
		dp[i][i][get(pos[i].f,pos[i].s)]=0;
		move(dp[i][i]);
	}
	for(int sz=2;sz<=n;sz++){
		for(int l=1,r=sz;r<=n;l++,r++){
			for(int x=1;x<=h*w;x++){
				for(int mid=l;mid<r;mid++)dp[l][r][x]=min(dp[l][r][x],dp[l][mid][x]+dp[mid+1][r][x]);
			}
			move(dp[l][r]);
		}
	}
	for(int x=1;x<=h*w;x++)ans=min(ans,dp[1][n][x]);
	cout<<((ans==inf)?-1:ans);
}

Compilation message

robots.cpp: In function 'void move(std::vector<long long int>&)':
robots.cpp:62:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |  for(int i=1;i<=v.size();i++)if(v[i]<=h*w)wtf[v[i]].pb(i);
      |              ~^~~~~~~~~~
robots.cpp: In function 'void setIO(std::string)':
robots.cpp:37:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
robots.cpp:38:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19032 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 18872 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 6 ms 19036 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19032 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 18872 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 6 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 18868 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 5 ms 19036 KB Output is correct
10 Correct 4 ms 19064 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19032 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 18872 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 6 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 18868 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 5 ms 19036 KB Output is correct
10 Correct 4 ms 19064 KB Output is correct
11 Correct 108 ms 83088 KB Output is correct
12 Correct 21 ms 26824 KB Output is correct
13 Correct 47 ms 60884 KB Output is correct
14 Correct 161 ms 83500 KB Output is correct
15 Correct 90 ms 82800 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19032 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 18872 KB Output is correct
4 Correct 4 ms 19036 KB Output is correct
5 Correct 6 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 18868 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 5 ms 19036 KB Output is correct
10 Correct 4 ms 19064 KB Output is correct
11 Correct 108 ms 83088 KB Output is correct
12 Correct 21 ms 26824 KB Output is correct
13 Correct 47 ms 60884 KB Output is correct
14 Correct 161 ms 83500 KB Output is correct
15 Correct 90 ms 82800 KB Output is correct
16 Runtime error 70 ms 163840 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -