Submission #418524

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
418524	2021-06-05 12:44:48	gsc2001	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	658 ms	130868 KiB

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define f(i, l, r) for (int i = l; i <= r; i++)
#define debug(x) cout << #x << '=' << (x) << endl
#define pb push_back
#define all(x) x.begin(), x.end()
#define sz(x) (ll)(x).size()
#define ff first
#define ss second
using PLL = pair<ll, ll>;
using VL = vector<ll>;
using VLL = vector<pair<ll, ll>>;
// -------------------------------------------------------------------------------
constexpr int mod = 1e9 + 7;
void setIO(const string &name = "") {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (sz(name)) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
// -------------------------------------------------------------------------------
 
 
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Compilation message (stderr)

tracks.cpp: In function 'void setIO(const string&)':
tracks.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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