oj.uz

Submission #93634

# Submission time Handle Problem Language Result Execution time Memory
93634 2019-01-10T13:19:34 Z tmwilliamlin168 Robots (APIO13_robots) C++14
60 / 100
 952 ms 164864 KB 
#include <bits/stdc++.h>
using namespace std;

const int mxN=9, mxS=500, mxD=mxS*mxS*mxN;
int n, w, h, di[4]={-1, 0, 1, 0}, dj[4]={0, 1, 0, -1}, d[mxN*(mxN+1)/2][mxS][mxS], ans=INT_MAX, m1[mxN][mxN];
string g[mxS];
array<int, 2> e[mxS][mxS][4], m2[mxN*(mxN+1)/2];
vector<array<int, 2>> bd[mxD];

bool ib(int i, int j) {
	return i<0||j<0||i>=h||j>=w||g[i][j]=='x';
}

array<int, 2> dfs(int i, int j, int k) {
	if(e[i][j][k][0]==-1) {
		e[i][j][k][0]=-2;
		int nk=k;
		if(g[i][j]=='C')
			nk=(k+1)%4;
		else if(g[i][j]=='A')
			nk=(k+3)%4;
		int ni=i+di[nk], nj=j+dj[nk];
		e[i][j][k]=ib(ni, nj)?array<int, 2>{i, j}:dfs(ni, nj, nk);
	}
	return e[i][j][k];
}

void bfs(int d[mxS][mxS]) {
	memset(d, 0x3f, sizeof(::d[0]));
	for(int di=0; di<mxD; ++di) {
		for(array<int, 2> u : bd[di]) {
			if(d[u[0]][u[1]]<=di)
				continue;
			d[u[0]][u[1]]=di;
			for(int i=0; i<4; ++i)
				if(e[u[0]][u[1]][i][0]!=-2)
					bd[di+1].push_back(e[u[0]][u[1]][i]);
		}
		bd[di].clear();
	}
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n >> w >> h;
	for(int i=0; i<h; ++i)
		cin >> g[i];
	memset(e, -1, sizeof(e));
	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);
	for(int i=0, k=0; i<n; ++i) {
		for(int j=i; j>=0; --j, ++k) {
			m1[j][i]=k;
			m2[k]={j, i};
			if(j<i) {
				for(int x=0; x<h; ++x)
					for(int y=0; y<w; ++y)
						for(int l=j; l<i; ++l)
							if(d[m1[j][l]][x][y]+d[m1[l+1][i]][x][y]<mxD)
								bd[d[m1[j][l]][x][y]+d[m1[l+1][i]][x][y]].push_back({x, y});
			} else
				for(int x=0; x<h; ++x)
					for(int y=0; y<w; ++y)
						if(g[x][y]-'0'-1==j)
							bd[0].push_back({x, y});
			bfs(d[k]);
		}
	}
	for(int i=0; i<h; ++i)
		for(int j=0; j<w; ++j)
			ans=min(d[m1[0][n-1]][i][j], ans);
	cout << (ans>1e9?-1:ans);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 63992 KB Output is correct
2 Correct 89 ms 63992 KB Output is correct
3 Correct 90 ms 63992 KB Output is correct
4 Correct 70 ms 63992 KB Output is correct
5 Correct 72 ms 63992 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 63992 KB Output is correct
2 Correct 89 ms 63992 KB Output is correct
3 Correct 90 ms 63992 KB Output is correct
4 Correct 70 ms 63992 KB Output is correct
5 Correct 72 ms 63992 KB Output is correct
6 Correct 79 ms 64008 KB Output is correct
7 Correct 84 ms 64036 KB Output is correct
8 Correct 86 ms 64120 KB Output is correct
9 Correct 83 ms 63992 KB Output is correct
10 Correct 70 ms 63992 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 63992 KB Output is correct
2 Correct 89 ms 63992 KB Output is correct
3 Correct 90 ms 63992 KB Output is correct
4 Correct 70 ms 63992 KB Output is correct
5 Correct 72 ms 63992 KB Output is correct
6 Correct 79 ms 64008 KB Output is correct
7 Correct 84 ms 64036 KB Output is correct
8 Correct 86 ms 64120 KB Output is correct
9 Correct 83 ms 63992 KB Output is correct
10 Correct 70 ms 63992 KB Output is correct
11 Correct 575 ms 125464 KB Output is correct
12 Correct 64 ms 63480 KB Output is correct
13 Correct 345 ms 88796 KB Output is correct
14 Correct 952 ms 143836 KB Output is correct
15 Correct 572 ms 109732 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 63992 KB Output is correct
2 Correct 89 ms 63992 KB Output is correct
3 Correct 90 ms 63992 KB Output is correct
4 Correct 70 ms 63992 KB Output is correct
5 Correct 72 ms 63992 KB Output is correct
6 Correct 79 ms 64008 KB Output is correct
7 Correct 84 ms 64036 KB Output is correct
8 Correct 86 ms 64120 KB Output is correct
9 Correct 83 ms 63992 KB Output is correct
10 Correct 70 ms 63992 KB Output is correct
11 Correct 575 ms 125464 KB Output is correct
12 Correct 64 ms 63480 KB Output is correct
13 Correct 345 ms 88796 KB Output is correct
14 Correct 952 ms 143836 KB Output is correct
15 Correct 572 ms 109732 KB Output is correct
16 Correct 678 ms 105748 KB Output is correct
17 Runtime error 852 ms 164864 KB Execution killed with signal 9 (could be triggered by violating memory limits)
18 Halted 0 ms 0 KB -