제출 #1237659

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1237659		hainam2k9	Nekameleoni (COCI15_nekameleoni)	C++20	140 / 140	427 ms	54604 KiB

nekameleoni

#include <bits/stdc++.h>
#define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0)
#define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
#define ll long long
#define ull unsigned long long
#define i128 __int128
#define db long double
#define sz(a) ((int)(a).size())
#define pb emplace_back
#define pf emplace_front
#define pob pop_back
#define pof pop_front
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define ins emplace
#define mp make_pair
using namespace std;
const int MOD = 1e9+7, MAXN = 1e5+5;
const string NAME = "";
int n,q,k,a[MAXN];
int sgt[MAXN<<2];
ll full;
vector<pair<ll,int>> pre[MAXN<<2],suf[MAXN<<2];
inline void Merge(int id, int l, int r){
    sgt[id]=min(sgt[l],sgt[r]);
    for(int i=sz(suf[l])-1, j=0; i>=0&&j<sz(pre[r]); --i){
        while(j<sz(pre[r])&&(suf[l][i].fi|pre[r][j].fi)!=full) ++j;
        if(j<sz(pre[r])) sgt[id]=min(sgt[id],pre[r][j].se-suf[l][i].se+1);
    }
    pre[id]=pre[l];
    for(pair<ll,int>& p : pre[r])
        if((pre[id].back().fi|p.fi)!=pre[id].back().fi) pre[id].pb(pre[id].back().fi|p.fi,p.se);
    suf[id]=suf[r];
    for(pair<ll,int>& p : suf[l])
        if((suf[id].back().fi|p.fi)!=suf[id].back().fi) suf[id].pb(suf[id].back().fi|p.fi,p.se);
}
void build(int id, int l, int r){
    if(l==r){
        if(k==1) sgt[id]=1;
        pre[id].pb(1ll<<a[l],l), suf[id].pb(1ll<<a[l],l);
        return;
    }
    int mid=(l+r)>>1;
    build(id<<1,l,mid);
    build(id<<1|1,mid+1,r);
    Merge(id,id<<1,id<<1|1);
}
void update(int id, int l, int r, int pos, int val){
    if(pos<l||r<pos) return;
    if(l==r){
        pre[id][0]=suf[id][0]=mp(1ll<<val,pos);
        return;
    }
    int mid=(l+r)>>1;
    update(id<<1,l,mid,pos,val);
    update(id<<1|1,mid+1,r,pos,val);
    Merge(id,id<<1,id<<1|1);
}
int main()
{
    tt;
    if(fopen((NAME + ".INP").c_str(), "r")) fo;
    memset(sgt,0x3f,sizeof(sgt));
    cin >> n >> k >> q;
    for(int i = 1; i<=n; ++i)
        cin >> a[i], --a[i];
    full=(1ll<<k)-1;
    build(1,1,n);
    while(q--){
        int type,x,y;
        cin >> type;
        if(type==1){
            cin >> x >> y;
            update(1,1,n,x,--y);
        }
        else cout << (sgt[1]>n ? -1 : sgt[1]) << "\n";
    }
}

컴파일 시 표준 에러 (stderr) 메시지

nekameleoni.cpp: In function 'int main()':
nekameleoni.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nekameleoni.cpp:64:45: note: in expansion of macro 'fo'
   64 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
nekameleoni.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nekameleoni.cpp:64:45: note: in expansion of macro 'fo'
   64 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~

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