結果

問題 No.340 雪の足跡
ユーザー koyumeishikoyumeishi
提出日時 2016-01-29 23:21:24
言語 C++11
(gcc 11.4.0)
結果
AC  
実行時間 349 ms / 1,000 ms
コード長 2,519 bytes
コンパイル時間 993 ms
コンパイル使用メモリ 100,328 KB
実行使用メモリ 23,536 KB
最終ジャッジ日時 2023-10-21 17:24:48
合計ジャッジ時間 6,037 ms
ジャッジサーバーID
(参考情報)
judge14 / judge10
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
4,348 KB
testcase_01 AC 2 ms
4,348 KB
testcase_02 AC 1 ms
4,348 KB
testcase_03 AC 2 ms
4,348 KB
testcase_04 AC 2 ms
4,348 KB
testcase_05 AC 2 ms
4,348 KB
testcase_06 AC 2 ms
4,348 KB
testcase_07 AC 2 ms
4,348 KB
testcase_08 AC 2 ms
4,348 KB
testcase_09 AC 2 ms
4,348 KB
testcase_10 AC 1 ms
4,348 KB
testcase_11 AC 3 ms
4,348 KB
testcase_12 AC 2 ms
4,348 KB
testcase_13 AC 3 ms
4,348 KB
testcase_14 AC 14 ms
5,316 KB
testcase_15 AC 16 ms
5,392 KB
testcase_16 AC 11 ms
4,556 KB
testcase_17 AC 22 ms
5,636 KB
testcase_18 AC 18 ms
5,636 KB
testcase_19 AC 23 ms
5,636 KB
testcase_20 AC 180 ms
23,532 KB
testcase_21 AC 102 ms
4,348 KB
testcase_22 AC 40 ms
23,388 KB
testcase_23 AC 206 ms
23,532 KB
testcase_24 AC 163 ms
23,532 KB
testcase_25 AC 173 ms
23,532 KB
testcase_26 AC 26 ms
4,348 KB
testcase_27 AC 7 ms
4,348 KB
testcase_28 AC 23 ms
4,764 KB
testcase_29 AC 262 ms
15,356 KB
testcase_30 AC 181 ms
12,576 KB
testcase_31 AC 300 ms
21,836 KB
testcase_32 AC 349 ms
23,536 KB
testcase_33 AC 283 ms
23,536 KB
testcase_34 AC 348 ms
23,536 KB
testcase_35 AC 221 ms
23,536 KB
testcase_36 AC 219 ms
23,536 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:30:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   30 |                 scanf("%d", &m);
      |                 ~~~~~^~~~~~~~~~
main.cpp:32:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   32 |                 scanf("%d", &pos);
      |                 ~~~~~^~~~~~~~~~~~
main.cpp:35:30: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   35 |                         scanf("%d", &next);
      |                         ~~~~~^~~~~~~~~~~~~

ソースコード

diff #

#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
using namespace std;
template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
template<class T> istream& operator , (istream& is, T& val){ return is >> val;}
template<class T> ostream& operator << (ostream& os, vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"\n":" ");return os;}
template<class T> ostream& operator , (ostream& os, T& val){ return os << " " << val;}
template<class T> ostream& operator >> (ostream& os, T& val){ return os << " " << val;}

int main(){
	int w,h,n;
	cin >> w,h,n;

	vector<vector<int>> tate(2*h+1, vector<int>(w+1, 0));
	vector<vector<int>> yoko(h+1, vector<int>(2*w+1, 0));

	for(int i=0; i<n; i++){
		int m;
		scanf("%d", &m);
		int pos;
		scanf("%d", &pos);
		while(m--){
			int next;
			scanf("%d", &next);
			if(next%w == pos%w){ // tate
				int c = next%w;
				tate[2*min(pos/w, next/w)][c]++;
				tate[2*max(pos/w, next/w)+1][c]--;
			}else{ // yoko
				int r = next/w;
				yoko[r][2*min(pos%w, next%w)]++;
				yoko[r][2*max(pos%w, next%w)+1]--;
			}
			pos = next;
		}
	}

	for(int i=0; i<h; i++){
		int val = 0;
		for(int j=0; j<yoko[i].size(); j++){
			val += yoko[i][j];
			yoko[i][j] = val>0;
		}
	}
	for(int j=0; j<w; j++){
		int val = 0;
		for(int i=0; i<tate.size(); i++){
			val += tate[i][j];
			tate[i][j] = val>0;
		}
	}

	vector<vector<int>> dist(h+1, vector<int>(w+1, 10000000));
	dist[0][0] = 0;

	vector<int> dx = {0,0,1,-1};
	vector<int> dy = {1,-1,0,0};

	queue<pair<int,int>> q;
	q.push({0,0});
	while(q.size()){
		auto pos = q.front();
		q.pop();
		int x = pos.second;
		int y = pos.first;
		for(int k__=0; k__<4; k__++){
			int new_x = x + dx[k__];
			int new_y = y + dy[k__];
			if(new_x < 0 || new_x >= w || new_y < 0 || new_y >= h) continue;
			if(x==new_x){
				if(tate[y+new_y][x]){
					if(dist[new_y][new_x] > dist[y][x] + 1){
						dist[new_y][new_x] = dist[y][x]+1;
						q.push({new_y, new_x});
					}
				}
			}else if(y==new_y){
				if(yoko[y][x+new_x]){
					if(dist[new_y][new_x] > dist[y][x] + 1){
						dist[new_y][new_x] = dist[y][x]+1;
						q.push({new_y, new_x});
					}
				}
			}
		}
	}

	if(dist[h-1][w-1] != 10000000){
		cout << dist[h-1][w-1] << endl;
	}else{
		cout << "Odekakedekinai.." << endl;
	}

	return 0;
}
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