제출 #977423

#제출 시각아이디문제언어결과실행 시간메모리
977423thegamercoder19Tracks in the Snow (BOI13_tracks)C++14
2.19 / 100
365 ms236268 KiB
/* Coded by thegamercoder Happy Competition and Hacking */ #define _CRT_SECURE_NO_WARNINGS #include <bits/stdc++.h> #define M_PI 3.14159265358979323846 #define FILER 0 using ll = long long; using ull = unsigned long long; using ld = long double; const ll MOD = pow(10, 9) + 7; const ll INFL = 0x3f3f3f3f3f3f3f3f; const ull INFUL = 0x3f3f3f3f3f3f3f3f; const ll INFT = 0x3f3f3f3f; const ll MAX = 401; const ll MODD = 998244353; const ll BL = 1; const double EPS = 1e-10; #define V vector #define pll pair<ll, ll> #define pull2 pair<ull,ull> #define MS multiset #define M map #define Q queue #define PQ priority_queue #define IOF ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); #define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c) #define FORR(typ,i,a,b,c) for(typ i = a; i > b; i -= c) #define FORA(a,i) for(auto i : a) #define FORAE(a,i) for(auto &i : a) #define all(v) v.begin(),v.end() #define sorta(a) sort(all(a)) #define sortd(a) sort(all(a), greater<ll>()) #define setp(x) setprecision(x)<<fixed #define RET return #define log(a,b) log(b)/log(a) #define WH(s) while(s) #define WHI(t) WH(t--) #define YES cout<<"YES"<<endl; #define NO cout<<"NO"<<endl; #define Yes cout<<"Yes"<<endl; #define No cout<<"No"<<endl; #define YESNO(s) cout<<(s?"YES":"NO")<<endl; #define YesNo(s) cout<<(s?"Yes":"No")<<endl; #define TYP 0 using namespace std; ll n, m, ans, dx[] = { -1,1,0,0 }, dy[] = { 0,0,-1,1 }; V<string> g; V<V<ll>> d; bool chk(ll x, ll y) { RET x >= 0 && x < n&& y >= 0 && y < m && g[x][y] == '.'; } void solve() { cin >> n >> m; g.resize(n); d.resize(n, V<ll>(m, INFL)); deque<pll> dq; FOR(ll, i, 0, n, 1) cin >> g[i]; d[0][0] = 1; ans = 1; dq.push_back({ 0,0 }); WH(!dq.empty()) { auto [x, y] = dq.front(); dq.pop_front(); ans = max(ans, d[x][y]); FOR(ll, i, 0, 4, 1) { ll xp = x + dx[i], yp = y + dy[i]; if (!chk(xp, yp))continue; ll w = g[x][y] != g[xp][yp]; if (d[xp][yp] > d[x][y] + w) { d[xp][yp] = d[x][y] + w; if (w)dq.push_back({ xp,yp }); else dq.push_front({ xp,yp }); } } } cout << ans << endl; } void init() { if (FILER) { freopen("pump.in", "r", stdin); freopen("pump.out", "w", stdout); } } void handle() { init(); ll t = 1; if (TYP)cin >> t; WHI(t)solve(); } int main() { IOF handle(); RET 0; }

컴파일 시 표준 에러 (stderr) 메시지

tracks.cpp: In function 'void solve()':
tracks.cpp:70:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   70 |         auto [x, y] = dq.front(); dq.pop_front();
      |              ^
tracks.cpp: In function 'void init()':
tracks.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen("pump.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen("pump.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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