Submission #97019

#	Time	Username	Problem	Language	Result	Execution time	Memory
97019		E869120	Wombats (IOI13_wombats)	C++14	76 / 100	11759 ms	255136 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;

int H, W, size_, A1[10009][209], A2[10009][209], dat[5509][109][109], U[16384]; bool ok[16384];
int M[2][109][109];

void getval(int ty, int pos) {
	pos += size_;
	for (int i = 0; i < W; i++) {
		M[ty][i][i] = A2[pos - size_][i]; int s = 0;
		for (int j = i + 1; j < W; j++) {
			s += A1[pos - size_][j - 1];
			M[ty][i][j] = s + A2[pos - size_][j];
		}
		s = 0;
		for (int j = i - 1; j >= 0; j--) {
			s += A1[pos - size_][j];
			M[ty][i][j] = s + A2[pos - size_][j];
		}
	}
}

void update(int pos) {
	if (ok[pos * 2 + 1] == false) {
		if (pos * 2 < size_) {
			for (int i = 0; i < W; i++) {
				for (int j = 0; j < W; j++) dat[U[pos]][i][j] = dat[U[pos * 2]][i][j];
			}
		}
		else {
			getval(0, pos * 2 - size_);
			for (int i = 0; i < W; i++) {
				for (int j = 0; j < W; j++) dat[U[pos]][i][j] = M[0][i][j];
			}
		}
		return;
	}
	int L = pos * 2, R = pos * 2 + 1;
	
	if (L < size_) {
		for (int i = 0; i < W; i++) {
			for (int j = 0; j < W; j++) {
				M[0][i][j] = dat[U[L]][i][j];
				M[1][i][j] = dat[U[R]][i][j];
			}
		}
	}
	else {
		getval(0, L - size_);
		getval(1, R - size_);
	}
	
	int rev = U[pos];
	for (int i = 0; i < W; i++) { for (int j = 0; j < W; j++) dat[rev][i][j] = (1 << 30); }
	for (int i = 0; i < W; i++) {
		for (int j = 0; j < W; j++) {
			for (int k = 0; k < W; k++) dat[rev][i][k] = min(dat[rev][i][k], M[0][i][j] + M[1][j][k]);
		}
	}
}

void recharge(int pos, int B){
	pos += size_;
	
	while (pos >= 2) {
		if (B == 2 && pos % 2 == 0) break;
		pos /= 2;
		update(pos);
	}
}

void init(int R, int C, int I[5000][200], int V[5000][200]) {
	size_ = 1; while (size_ < R) size_ *= 2;
	H = R; W = C;
	for (int i = 0; i < H; i++) {
		int cx = i + size_; ok[cx] = true;
		while (cx >= 2) { cx /= 2; ok[cx] = true; }
	}
	int cntv = 0;
	for (int i = 0; i < size_; i++) {
		if (ok[i] == true) { U[i] = cntv; cntv++; }
	}
    for (int i = 0; i < H; i++) {
		for(int j = 0; j < W - 1; j++) A1[i][j] = I[i][j];
	}
	for (int i = 0; i < H - 1; i++) {
		for (int j = 0; j < W; j++) A2[i][j] = V[i][j];
	}
	for (int i = 0; i < size_; i++) recharge(i, 2);
	
	/*for (int i = 0; i < cntv; i++) {
		cout<<i<<":"<<endl;
		for (int j = 0; j < W; j++) {
			for (int k = 0; k < W; k++) cout<<dat[i][j][k]<<" "; cout<<endl;
		}
		cout<<endl;
	}*/
}

void changeH(int P, int Q, int T) {
    A1[P][Q] = T;
    recharge(P, 1);
}

void changeV(int P, int Q, int T) {
    A2[P][Q] = T;
    recharge(P, 1);
}

int escape(int V1, int V2) {
	return dat[U[1]][V1][V2];
}

Compilation message (stderr)

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 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 21 / 21
• Subtask 6: 0 / 24