oj.uz

Submission #93715

# Submission time Handle Problem Language Result Execution time Memory
93715 2019-01-10T22:24:50 Z nikolapesic2802 Robots (APIO13_robots) C++14
100 / 100
 1059 ms 148472 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];

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]=ni<0||ni>=h||nj<0||nj>=w||g[ni][nj]=='x'?array<int, 2>{i, j}:dfs(ni, nj, nk);
	}
	return e[i][j][k];
}

void ud(int d[mxS][mxS], int i, int j, int k) {
	if(k<mxD&&d[i][j]>k) {
		d[i][j]=k;
		bd[k].push_back({i, j});
	}
}

void bfs(int d[mxS][mxS]) {
	for(int di=0; di<mxD; ++di) {
		for(array<int, 2> u : bd[di]) {
			if(d[u[0]][u[1]]<di)
				continue;
			for(int i=0; i<4; ++i) {
				array<int, 2> v=e[u[0]][u[1]][i];
				if(v[0]!=-2)
					ud(d, v[0], v[1], di+1);
              	else
                  assert(0);
			}
		}
		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);
	memset(d, 0x3f, sizeof(d));
	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)
							ud(d[k], x, y, d[m1[j][l]][x][y]+d[m1[l+1][i]][x][y]);
			} else
				for(int x=0; x<h; ++x)
					for(int y=0; y<w; ++y)
						if(g[x][y]-'0'-1==j)
							ud(d[k], x, y, 0);
			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 102 ms 105080 KB Output is correct
2 Correct 102 ms 105116 KB Output is correct
3 Correct 105 ms 105072 KB Output is correct
4 Correct 107 ms 105080 KB Output is correct
5 Correct 104 ms 105080 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 105080 KB Output is correct
2 Correct 102 ms 105116 KB Output is correct
3 Correct 105 ms 105072 KB Output is correct
4 Correct 107 ms 105080 KB Output is correct
5 Correct 104 ms 105080 KB Output is correct
6 Correct 109 ms 105208 KB Output is correct
7 Correct 97 ms 105032 KB Output is correct
8 Correct 114 ms 105080 KB Output is correct
9 Correct 115 ms 105208 KB Output is correct
10 Correct 102 ms 105080 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 105080 KB Output is correct
2 Correct 102 ms 105116 KB Output is correct
3 Correct 105 ms 105072 KB Output is correct
4 Correct 107 ms 105080 KB Output is correct
5 Correct 104 ms 105080 KB Output is correct
6 Correct 109 ms 105208 KB Output is correct
7 Correct 97 ms 105032 KB Output is correct
8 Correct 114 ms 105080 KB Output is correct
9 Correct 115 ms 105208 KB Output is correct
10 Correct 102 ms 105080 KB Output is correct
11 Correct 571 ms 110068 KB Output is correct
12 Correct 92 ms 105848 KB Output is correct
13 Correct 355 ms 105464 KB Output is correct
14 Correct 709 ms 117368 KB Output is correct
15 Correct 476 ms 106744 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 105080 KB Output is correct
2 Correct 102 ms 105116 KB Output is correct
3 Correct 105 ms 105072 KB Output is correct
4 Correct 107 ms 105080 KB Output is correct
5 Correct 104 ms 105080 KB Output is correct
6 Correct 109 ms 105208 KB Output is correct
7 Correct 97 ms 105032 KB Output is correct
8 Correct 114 ms 105080 KB Output is correct
9 Correct 115 ms 105208 KB Output is correct
10 Correct 102 ms 105080 KB Output is correct
11 Correct 571 ms 110068 KB Output is correct
12 Correct 92 ms 105848 KB Output is correct
13 Correct 355 ms 105464 KB Output is correct
14 Correct 709 ms 117368 KB Output is correct
15 Correct 476 ms 106744 KB Output is correct
16 Correct 559 ms 105628 KB Output is correct
17 Correct 1059 ms 148472 KB Output is correct
18 Correct 610 ms 109804 KB Output is correct
19 Correct 497 ms 105632 KB Output is correct
20 Correct 772 ms 122736 KB Output is correct