Submission #415977

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
415977	2021-06-01 18:46:43	nkato	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	931 ms	128300 KiB

tracks

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#include <bits/stdc++.h>
#define ll long long
#define vi vector<int>
#define pi pair<int, int>
#define se second
#define fi first
#define vt vector
#define pb push_back
#define nl endl
#define dbg(...) " [" << #__VA_ARGS__": " << (__VA_ARGS__) << "] "
#define all(v) v.begin(), v.end()
#define FORN(a, b, i) for(int i = (a); i < (b); i++)
#define FORE(a, b, i) for(int i = (a); i <= (b); i++)
#define FOR(a, i) for(int i = 0; i < (a); i++)
#define trav(x, a) for (auto& a : x)
using namespace std;
void setIO(string name) {
  ios_base::sync_with_stdio(0); cin.tie(0);
  if (name.empty()) return;
  freopen((name+".in").c_str(),"r",stdin);
  freopen((name+".out").c_str(),"w",stdout);
}
const int nax = 4000;
string b[nax];
 
 
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Compilation message (stderr)

tracks.cpp: In function 'void setIO(std::string)':
tracks.cpp:24:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:25:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70