Submission #1067424

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
10674242024-08-20 16:50:58vjudge1Dynamic Diameter (CEOI19_diameter)C++17
24 / 100
96 ms65676 KiB
///*** Sown_Vipro ***///
/// ->TUYEN QUOC GIA<- ///
#include<bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
#define F first
#define S second
#define pb push_back
#define pi pair<int, int>
#define pii pair<int, pair<int, int> >
#define all(a) a.begin(), a.end()
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define REP(i, a, b) for(int i = a; i >= b; --i)
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
#define szz(s) int(s.size())
#define int long long
const int N = 1e5 + 5, MAX = 1e6, oo = 1e9 + 5, MOD = 1e9 + 7;
int n, q, W, m, TIME, res;
int in[N], out[N], ver[N], d[N], lz[4 * N], h[N];
vector<pi> e[N];
struct ed{
int u, v, w;
} edge[N];
void euler(int u, int p){
 
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Compilation message (stderr)

diameter.cpp: In function 'int main()':
diameter.cpp:17:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~
diameter.cpp:152:5: note: in expansion of macro 'inp'
  152 |     inp("in.txt");
      |     ^~~
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