結果
問題 | No.340 雪の足跡 |
ユーザー | koyumeishi |
提出日時 | 2016-01-29 23:21:24 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 334 ms / 1,000 ms |
コード長 | 2,519 bytes |
コンパイル時間 | 1,122 ms |
コンパイル使用メモリ | 99,688 KB |
実行使用メモリ | 23,168 KB |
最終ジャッジ日時 | 2024-09-21 18:40:22 |
合計ジャッジ時間 | 6,245 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 32 |
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
#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; }