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Submission #1067846

# Submission time Handle Problem Language Result Execution time Memory
1067846 2024-08-21T04:32:46 Z sleepntsheep Wombats (IOI13_wombats) C++17
0 / 100
 11 ms 24156 KB 
#pragma GCC optimize("O3,unroll-loops")
#include "wombats.h"
#include <cstdio>
#include <set>
#include <algorithm>
#include <cstring>
#include <vector>
#include <cassert>
using namespace std;

#ifndef ROW
#define ROW 5000
#endif

int r, c, h[ROW][100], v[ROW][100];
int ans_5[100][100], vis[100];


int calc_ii(int ii) {
	static int dp[2][100];
	/* find answer for (V1, V2) where V1 = ii */
	memset(dp[0], 63, sizeof dp[0]);
	dp[0][ii] = 0;

	int I = 0;
	for (int i = 0; i < r; ++i, I ^= 1) {
		static int pre[100], suf[100], ph[100]; /* annoying ahh math */ 
		ph[0] = 0;
		for (int j = 0; j + 1 < c; ++j)
			ph[j + 1] = ph[j] + h[i][j];

		pre[0] = dp[I][0];
		for (int j = 1; j < c; ++j) pre[j] = min(pre[j - 1], dp[I][j] - ph[j]);
		suf[c - 1] = dp[I][c - 1] + ph[c - 1];
		for (int j = c - 2; j >= 0; --j) suf[j] = min(suf[j + 1], dp[I][j] + ph[j]);

		for (int j = 0; j < c; ++j)
			dp[I][j] = min(ph[j] + pre[j], suf[j] - ph[j]);
		for (int j = 0; j < c; ++j)
			dp[!I][j] = dp[I][j] + v[i][j];
	}
	for (int jj = 0; jj < c; ++jj) ans_5[ii][jj] = dp[(r - 1) & 1][jj];
}


void changeH(int P, int Q, int W) {
	h[P][Q] = W;
	for (int i = 0; i < 100; ++i) vis[i] = 0;
}

void changeV(int P, int Q, int W) {
	v[P][Q] = W;
	for (int i = 0; i < 100; ++i) vis[i] = 0;
}

void init(int R, int C, int H[ROW][200], int V[ROW][200]) {
	r = R, c = C;

	for (int i = 0; i + 1 < r; ++i) for (int j = 0; j < c; ++j)
		v[i][j] = V[i][j];
	for (int i = 0 ; i < r; ++i) for (int j = 0; j + 1 < c; ++j)
		h[i][j] = H[i][j];

	for (int i = 0; i < 100; ++i) vis[i] = 0;
}

int escape(int V1, int V2) {
	if (not vis[V1]) calc_ii(V1);
	return ans_5[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]
   15 |  int res;
      |      ^~~
wombats.cpp: In function 'int calc_ii(int)':
wombats.cpp:43:1: warning: no return statement in function returning non-void [-Wreturn-type]
   43 | }
      | ^

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 9 ms 19288 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 4444 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 12892 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 11 ms 24156 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 12892 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 12888 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -