제출 #1128567

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1128567		hainam2k9	Sterilizing Spray (JOI15_sterilizing)	C++20	100 / 100	208 ms	4936 KiB

sterilizing

#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,x,y,type;
struct SegmentTree{
    ll sum;
    int Max;
}sgt[MAXN<<2];
void updatePoint(int id, int l, int r, int pos, int val){
    if(pos<l||r<pos) return;
    if(l==r) return sgt[id].sum=sgt[id].Max=val, void();
    int mid=(l+r)>>1;
    updatePoint(id<<1,l,mid,pos,val);
    updatePoint(id<<1|1,mid+1,r,pos,val);
    sgt[id].sum=sgt[id<<1].sum+sgt[id<<1|1].sum;
    sgt[id].Max=max(sgt[id<<1].Max,sgt[id<<1|1].Max);
}
void updateRange(int id, int l, int r, int u, int v){
    if(v<l||r<u||sgt[id].Max==0) return;
    if(l==r) return sgt[id].sum/=k, sgt[id].Max=sgt[id].sum, void();
    int mid=(l+r)>>1;
    updateRange(id<<1,l,mid,u,v);
    updateRange(id<<1|1,mid+1,r,u,v);
    sgt[id].sum=sgt[id<<1].sum+sgt[id<<1|1].sum;
    sgt[id].Max=max(sgt[id<<1].Max,sgt[id<<1|1].Max);
}
ll getsum(int id, int l, int r, int u, int v){
    if(v<l||r<u) return 0ll;
    if(u<=l&&r<=v) return sgt[id].sum;
    int mid=(l+r)>>1;
    return getsum(id<<1,l,mid,u,v)+getsum(id<<1|1,mid+1,r,u,v);
}
int main()
{
    tt;
    if(fopen((NAME + ".INP").c_str(), "r")) fo;
    cin >> n >> q >> k;
    for(int i = 1; i<=n; ++i)
        cin >> x, updatePoint(1,1,n,i,x);
    while(q--){
        cin >> type >> x >> y;
        if(type==1) updatePoint(1,1,n,x,y);
        else if(type==2&&k!=1) updateRange(1,1,n,x,y);
        else if(type==3) cout << getsum(1,1,n,x,y) << "\n";
    }
}
//block = q/(n+30)
//type 1 complexity: block*n*log(n)
//type 2 complexity: block*30*n*log(n)
//worst complexity ~ 5e7

컴파일 시 표준 에러 (stderr) 메시지

sterilizing.cpp: In function 'int main()':
sterilizing.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)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sterilizing.cpp:54:45: note: in expansion of macro 'fo'
   54 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
sterilizing.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)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sterilizing.cpp:54:45: note: in expansion of macro 'fo'
   54 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 75 / 75