Submission #798487

#	Time	Username	Problem	Language	Result	Execution time	Memory
798487		QwertyPi	Wombats (IOI13_wombats)	C++14	55 / 100	20073 ms	26028 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>

using namespace std;
const int R_MAX = 5000;
const int C_MAX = 200;
const int K = 50;
const int INF = 1 << 30;
int R, C, H[R_MAX][C_MAX], V[R_MAX][C_MAX];
int A[R_MAX / K][C_MAX][C_MAX], B[C_MAX][C_MAX];
int DP[C_MAX][C_MAX];

void init(){
	for(int i = 0; i < C; i++) for(int j = 0; j < C; j++) DP[i][j] = i == j ? 0 : INF;
}

bool chmin(int& x, int y){
	if(x > y){
		x = y; return true;
	}
	return false;
}

void process(int row){
	for(int i = 0; i < C; i++){
		for(int j = 0; j < C; j++){
			for(int k = j - 1; k >= 0; k--){
				if(!chmin(DP[i][k], DP[i][k + 1] + H[row][k])){
					break;
				}
			}
			for(int k = j + 1; k < C; k++){
				if(!chmin(DP[i][k], DP[i][k - 1] + H[row][k - 1])){
					break;
				}
			}
		}
	}
	for(int i = 0; i < C; i++){
		for(int j = 0; j < C; j++){
			DP[i][j] += V[row][j];
		}
	}
}

void recalc(int part = -1){
	init();
	for(int r = 0; r < R; r++){
		process(r);
	}
	for(int i = 0; i < C; i++) 
		for(int j = 0; j < C; j++) 
			B[i][j] = DP[i][j];
}

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 - 1; j++){
    		::H[i][j] = H[i][j];
		}
	}
	for(int i = 0; i < R - 1; i++){
		for(int j = 0; j < C; j++){
			::V[i][j] = V[i][j];
		}
	}
	recalc();
}

void changeH(int P, int Q, int W) {
	::H[P][Q] = W;
	recalc(P / K);
}

void changeV(int P, int Q, int W) {
	::V[P][Q] = W;
	recalc(P / K);
}

int escape(int V1, int V2) {
	return B[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]
   15 |  int res;
      |      ^~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24