Submission #497144

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
4971442021-12-22 15:00:34viethoangphamTracks in the Snow (BOI13_tracks)C++17
100 / 100
1635 ms236236 KiB
#include<bits/stdc++.h>
#define faster ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define el "\n"
#define memset(a, x) memset(a, (x), sizeof(a));
#define sz(x) x.size()
#define pb push_back
#define all(x) x.begin(), x.end()
#define f first
#define s second
using namespace std;
using ll = long long;
using ld = long double;
using str = string;
const int INF = int(1e9) + 100;
const ll MAXN = (1 << 20) + 55;
const ll MOD = 1e6 + 3;
#define yes cout << "yes" << el;
#define no cout << "no" << el;
#define umap unordered_map
ll gcd(ll x, ll y){
return !y?x:gcd(y,x%y);
}
void setIn(str s) { freopen(s.c_str(),"r",stdin); }
void setOut(str s) { freopen(s.c_str(),"w",stdout); }
void setIO(str s) {
setIn(s+".in"); setOut(s+".out");
}
const ll dx[4] = {1, 0, -1, 0};
const ll dy[4] = {0, 1, 0, -1};
ll n, m, ans = 0;
 
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Compilation message (stderr)

tracks.cpp:33:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   33 | main(){
      | ^~~~
tracks.cpp: In function 'void setIn(str)':
tracks.cpp:23:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 | void setIn(str s) { freopen(s.c_str(),"r",stdin); }
      |                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
tracks.cpp: In function 'void setOut(str)':
tracks.cpp:24:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 | void setOut(str s) { freopen(s.c_str(),"w",stdout); }
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
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