oj.uz

Submission #60379

# Submission time Handle Problem Language Result Execution time Memory
60379 2018-07-24T04:21:40 Z spencercompton Wombats (IOI13_wombats) C++17
76 / 100
 4117 ms 263168 KB 
#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;
int bel[5000][200];
int rig[5000][200];
int r, c;
vector<vector<int> > get1(int a){
	// cout << "BEG " << endl;
	vector<vector<int> > ret;
	for(int i = 0; i<c; i++){
		vector<int> now;
		now.resize(c);
		int sum = 0;
		for(int j = i+1; j<c; j++){
			sum += rig[a][j-1];
			now[j] = sum;
		}
		sum = 0;
		for(int j = i-1; j>=0; j--){
			sum += rig[a][j];
			now[j] = sum;
		}
		ret.push_back(now);
	}
	// cout << "END " << endl;
	return ret;
}
vector<int> cur;
vector<vector<int> > a1;
vector<vector<int> > a2;
int beg;
int ro;
void go(int l, int r, int lo, int hi){
	if(l>r){
		return;
	}
	int m = (l+r)/2;
	int best = lo;
	int val = a1[beg][best] + a2[best][m] + bel[ro][best];
	for(int i = lo+1; i<=hi; i++){
		int here = a1[beg][i] + a2[i][m] + bel[ro][i];
		if(here<val){
			val = here;
			best = i;
		}
	}
	cur[m] = val;
	go(l,m-1,lo,best);
	go(m+1,r,best,hi);
}
vector<vector<int> > comb(vector<vector<int> > a, vector<vector<int> > b){
	vector<vector<int> > ret;
	cur.resize(c);
	a1 = a;
	a2 = b;
	for(int i = 0; i<c; i++){
		beg = i;
		go(0,c-1,0,c-1);
		ret.push_back(cur);
	}
	return ret;
 
	// vector<vector<int> > ret;
	// cur.resize(c);
	// a1 = a;
	// a2 = b;
	// for(int i = 0; i<c; i++){
	// 	int prev = -1;
	// 	for(int k = 0; k<c; k++){
	// 		int best = a1[i][0] + bel[ro][0] + a2[0][k];
	// 		int noww = 0;
	// 		for(int j = 1; j<c; j++){
	// 			int cv =  a1[i][j] + bel[ro][j] + a2[j][k];
	// 			if(cv<best){
	// 				noww = j;
	// 				best = cv;
	// 			}
	// 		}
	// 		assert(noww>=prev);
	// 		prev = noww;
	// 		// cout << "@ " << best << " " << i << " " << k << endl;
	// 		cur[k] = best;
	// 	}
	// 	ret.push_back(cur);
	// }
	// return ret;
}
vector<vector<int> > brute(int s, int e){
	int rows = e-s+1;
	vector<int> all[rows][c];
	vector<vector<int> > bot = get1(e);
	for(int i = 0; i<c; i++){
		all[rows-1][i] = bot[i];
	}
	for(int i = rows-2; i>=0; i--){
		for(int j = 0; j<c; j++){
			for(int k = 0; k<c; k++){
				all[i][j].push_back(all[i+1][j][k]+bel[s+i][j]);
			}
		}
		for(int j = 1; j<c; j++){
			for(int k = 0; k<c; k++){
				all[i][j][k] = min(all[i][j][k],all[i][j-1][k]+rig[s+i][j-1]);
			}
		}
		for(int j = c-2; j>=0; j--){
			for(int k = 0; k<c; k++){
				all[i][j][k] = min(all[i][j][k],all[i][j+1][k]+rig[s+i][j]);
			}
		}
	}
	vector<vector<int> > ret;
	for(int i = 0; i<c; i++){
		ret.push_back(all[0][i]);
	}
	return ret;
}
class Node{
public:
	int s, e;
	Node *l, *r;
	bool leaf;
	vector<vector<int> > ar;
	Node (int a, int b){
		s = a;
		e = b;
		leaf = (e-s+1) <= 8;
		if(s==e){
			ar = get1(s);
			l = NULL;
			r = NULL;
		}
		else if(leaf){
			ar = brute(s,e);
			l = NULL;
			r = NULL;
		}
		else{
			l = new Node(s,(s+e)/2);
			r = new Node((s+e)/2+1,e);
			ro = l->e;
			ar = comb(l->ar,r->ar);
		}
		// cout << "FOR " << a << " - " << b << endl;
		// for(int i = 0; i<c; i++){
		// 	for(int j = 0; j<c; j++){
		// 		// cout << i << " to " << j << " " << ar[i][j] << endl;
		// 	}
		// }
	}
	void upd(int ind){
		if(s==e){
			ar = get1(s);
			return;
		}
		if(leaf){
			ar = brute(s,e);
			return;
		}
		if(ind<=(s+e)/2){
			l->upd(ind);
		}
		else{
			r->upd(ind);
		}
		ro = l->e;
		ar = comb(l->ar,r->ar);
	}
};
Node *t;
void init(int R, int C, int H[5000][200], int V[5000][200]) {
	r = R;
	c = C;
	for(int i = 0; i<r; i++){
		for(int j =0 ; j<c; j++){
			if(i+1<r){
				bel[i][j] = V[i][j];
				// cout << bel[i][j] << " ";
			}
			if(j+1<c){
				rig[i][j] = H[i][j];
			}
		}
		// cout << endl;
	}
	t = new Node(0,r-1);
}
 
void changeH(int P, int Q, int W) {
	// cout << "UPDATE " << P << endl;
	rig[P][Q] = W;
	// t = new Node(0,c-1);
	t->upd(P);
}
 
void changeV(int P, int Q, int W) {
	// cout << "QED " << P << endl;
	bel[P][Q] = W;
	// t = new Node(0,c-1);
	t->upd(P);
}
 
int escape(int V1, int V2) {
	return t->ar[V1][V2];
}

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8440 KB Output is correct
2 Correct 13 ms 8440 KB Output is correct
3 Correct 122 ms 10084 KB Output is correct
4 Correct 14 ms 10084 KB Output is correct
5 Correct 17 ms 10084 KB Output is correct
6 Correct 3 ms 10084 KB Output is correct
7 Correct 2 ms 10084 KB Output is correct
8 Correct 3 ms 10084 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10084 KB Output is correct
2 Correct 2 ms 10084 KB Output is correct
3 Correct 3 ms 10084 KB Output is correct
4 Correct 3 ms 10084 KB Output is correct
5 Correct 3 ms 10084 KB Output is correct
6 Correct 5 ms 10084 KB Output is correct
7 Correct 4 ms 10084 KB Output is correct
8 Correct 3 ms 10084 KB Output is correct
9 Correct 3 ms 10084 KB Output is correct
10 Correct 4 ms 10084 KB Output is correct
11 Correct 90 ms 10084 KB Output is correct
12 Correct 4 ms 10084 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 231 ms 10084 KB Output is correct
2 Correct 193 ms 10084 KB Output is correct
3 Correct 266 ms 10084 KB Output is correct
4 Correct 232 ms 10084 KB Output is correct
5 Correct 217 ms 10084 KB Output is correct
6 Correct 2 ms 10084 KB Output is correct
7 Correct 2 ms 10084 KB Output is correct
8 Correct 2 ms 10084 KB Output is correct
9 Correct 1087 ms 10084 KB Output is correct
10 Correct 3 ms 10084 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 17560 KB Output is correct
2 Correct 25 ms 17560 KB Output is correct
3 Correct 25 ms 17560 KB Output is correct
4 Correct 79 ms 18392 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 18392 KB Output is correct
2 Correct 201 ms 18392 KB Output is correct
3 Correct 226 ms 18392 KB Output is correct
4 Correct 233 ms 18392 KB Output is correct
5 Correct 208 ms 18392 KB Output is correct
6 Correct 23 ms 18392 KB Output is correct
7 Correct 26 ms 18392 KB Output is correct
8 Correct 28 ms 18392 KB Output is correct
9 Correct 78 ms 18568 KB Output is correct
10 Correct 19 ms 18568 KB Output is correct
11 Correct 16 ms 18568 KB Output is correct
12 Correct 98 ms 18568 KB Output is correct
13 Correct 21 ms 18568 KB Output is correct
14 Correct 13 ms 18568 KB Output is correct
15 Correct 2 ms 18568 KB Output is correct
16 Correct 3 ms 18568 KB Output is correct
17 Correct 3 ms 18568 KB Output is correct
18 Correct 4 ms 18568 KB Output is correct
19 Correct 4 ms 18568 KB Output is correct
20 Correct 4 ms 18568 KB Output is correct
21 Correct 3 ms 18568 KB Output is correct
22 Correct 3 ms 18568 KB Output is correct
23 Correct 3 ms 18568 KB Output is correct
24 Correct 4 ms 18568 KB Output is correct
25 Correct 91 ms 18568 KB Output is correct
26 Correct 4 ms 18568 KB Output is correct
27 Correct 991 ms 18568 KB Output is correct
28 Correct 3180 ms 112912 KB Output is correct
29 Correct 2834 ms 112912 KB Output is correct
30 Correct 3030 ms 112912 KB Output is correct
31 Correct 3226 ms 121624 KB Output is correct
32 Correct 3 ms 121624 KB Output is correct

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 121624 KB Output is correct
2 Correct 246 ms 121624 KB Output is correct
3 Correct 226 ms 121624 KB Output is correct
4 Correct 251 ms 121624 KB Output is correct
5 Correct 212 ms 121624 KB Output is correct
6 Correct 29 ms 121624 KB Output is correct
7 Correct 34 ms 121624 KB Output is correct
8 Correct 22 ms 121624 KB Output is correct
9 Correct 69 ms 121624 KB Output is correct
10 Correct 12 ms 121624 KB Output is correct
11 Correct 13 ms 121624 KB Output is correct
12 Correct 96 ms 121624 KB Output is correct
13 Correct 19 ms 121624 KB Output is correct
14 Correct 14 ms 121624 KB Output is correct
15 Runtime error 4117 ms 263168 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
16 Halted 0 ms 0 KB -