제출 #417599

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
417599	2021-06-04 02:24:11	cpp219	Mergers (JOI19_mergers)	C++14	100 / 100	1912 ms	106832 KiB

mergers

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#pragma GCC optimization "O2"
#pragma GCC optimization "unroll-loop"
#pragma GCC target ("avx2")
#include <bits/stdc++.h>
#define ll int
#define ld long double
#define fs first
#define sc second
using namespace std;
const ll N = 5e5 + 9;
const ll inf = 1e9 + 7;
typedef pair<ll,ll> LL;
vector<ll> g[N],c[N];
ll n,k,x,y,in[N],out[N],nTime = 1,grp[N],cnt[N];
ll par[N];
void DFS(ll u,ll p){
    in[u] = out[u] = nTime; nTime++;
    par[u] = p;
    for (auto i : g[u])
        if (i != p) DFS(i,u),out[u] = max(out[u],out[i]);
}
ll st[2][4*N]; /// 0 for min   1 for max
void upd(ll cond,ll id,ll l,ll r,ll u,ll val){
    if (u < l||r < u) return;
    if (l == r){
        st[cond][id] = val; return;
    }
    ll mid = (l + r)/2;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

mergers.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
mergers.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
mergers.cpp: In function 'int main()':
mergers.cpp:71:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 24 / 24
• Subtask 3: 14 / 14
• Subtask 4: 22 / 22
• Subtask 5: 30 / 30