Submission #1083442

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1083442	2024-09-03 07:22:53	LucasLe	Magic Tree (CEOI19_magictree)	C++17	0 / 100	5 ms	7516 KiB

magictree

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#include <bits/stdc++.h>
#define                int  long long
#define                pii  pair<int, int>
#define                 fi  first
#define                 se  second
#define                 ld  long double
#define                 vi  vector<int>
#define                vii  vector<vector<int>>
#define             all(v)  (v).begin(), (v).end()
#define       rep(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i)
#define       per(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i)
using namespace std;
const int MOD = 1e9 + 7;
int add(int a, int b) {
  a += b;
  if (a >= MOD) a -= MOD;
  return a;
}
int mul(int a, int b) {
  (a *= b) %= MOD;
  return a;
}
int bin_pow(int x, int y) {
 
 
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Compilation message (stderr)

magictree.cpp: In function 'int main()':
magictree.cpp:93:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |   freopen("input.txt", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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• Subtask 2: 0 / 3
• Subtask 3: 0 / 11
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• Subtask 8: 0 / 17