Submission #367632

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
367632	2021-02-17 19:21:45	Sparky_09	One-Way Streets (CEOI17_oneway)	C++17	100 / 100	233 ms	22508 KiB

oneway

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#include "bits/stdc++.h"
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define trav(a, x) for(auto& a : x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<pii> vpi;
template <class T>
void rd(T &x) {
  int sgn = 1;
  char ch;
  x = 0;
  for (ch = getchar(); (ch < '0' || ch > '9') && ch != '-'; ch = getchar()) ;
  if (ch == '-') ch = getchar(), sgn = -1;
  for (; '0' <= ch && ch <= '9'; ch = getchar()) x = x * 10 + ch - '0';
  x *= sgn;
}
template <class T>
void wr(T x) {
  if (x < 0) putchar('-'), wr(-x);
  else if (x < 10) putchar(x + '0');
  else wr(x / 10), putchar(x % 10 + '0');
}
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
 
 
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Compilation message (stderr)

oneway.cpp: In function 'void usaco(std::string)':
oneway.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   33 |   freopen((s+".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
oneway.cpp:34:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   34 |   freopen((s+".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40