제출 #421787

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
421787		tqbfjotld	푸드 코트 (JOI21_foodcourt)	C++14	21 / 100	710 ms	51908 KiB

foodcourt

#include <bits/stdc++.h>
using namespace std;
#define int long long


struct node{
    int s,e;
    int lazymin,lazych;
    int v;
    node *l,*r;
    node (int _s, int _e){
        s = _s; e = _e;
        lazymin = 0; lazych = 0;
        v = 0;
        if (s!=e){
            l = new node(s,(s+e)/2);
            r = new node((s+e)/2+1,e);
        }
    }
    void proc(){
        if (lazymin==0 && lazych==0) return;
        if (s!=e){
            l->lazymin = min(l->lazymin,l->lazych+lazymin);
            l->lazych += lazych;
            r->lazymin = min(r->lazymin,r->lazych+lazymin);
            r->lazych += lazych;
        }
        if (s==e){
            v += lazymin;
            v = max(v,0LL);
            v -= lazymin;
            v += lazych;
        }
        lazymin = 0;
        lazych = 0;
    }
    void inc(int a, int b, int val){
        proc();
        if (a<=s && e<=b){
            lazych += val;
            proc();
            return;
        }
        else if (b<=(s+e)/2){
            l->inc(a,b,val);
        }
        else if (a>(s+e)/2){
            r->inc(a,b,val);
        }
        else{
            l->inc(a,b,val);
            r->inc(a,b,val);
        }
        l->proc();
        r->proc();
    }
    void dec(int a, int b, int val){
        proc();
        if (a<=s && e<=b){
            lazych -= val;
            lazymin = min(lazymin,lazych);
            proc();
            return;
        }
        else if (b<=(s+e)/2){
            l->dec(a,b,val);
        }
        else if (a>(s+e)/2){
            r->dec(a,b,val);
        }
        else{
            l->dec(a,b,val);
            r->dec(a,b,val);
        }
        l->proc(); r->proc();
    }
    int qu(int pos){
        proc();
        if (s==e) return v;
        if (pos>(s+e)/2)return r->qu(pos);
        else return l->qu(pos);
    }
}*root;

struct q_dat{
    int l,r;
    int t,k;
    q_dat(){
        l = 0; r = 0; t = 0; k = 0;
    }
    q_dat(int _l, int _r, int _t, int _k){
        l = _l; r = _r; t = _t; k = _k;
    }
};
vector<q_dat> query1;
int groupnum[250005];
vector<q_dat> query2;
vector<pair<pair<int,int>,int> > query3;

main(){
    int n,m,q;
    scanf("%lld%lld%lld",&n,&m,&q);
    root = new node(1,n);
    for (int x = 0; x<q; x++){
        int a;
        scanf("%lld",&a);
        if (a==1){
            int b,c,d,e;
            scanf("%lld%lld%lld%lld",&b,&c,&d,&e);
            groupnum[x] = d;
            query1.push_back(q_dat(b,c,x,e));
            root->inc(b,c,e);
        }
        else if (a==2){
            int b,c,d;
            scanf("%lld%lld%lld",&b,&c,&d);
            query2.push_back(q_dat(b,c,x,d));
            root->dec(b,c,d);
        }
        else if (a==3){
            int b,c;
            scanf("%lld%lld",&b,&c);
            query3.push_back({{b,c},x});
            int num = root->qu(b);
           // printf("%lld has %lld\n",b,num);
            if (num>=c){
                printf("1\n");
            }
            else{
                printf("0\n");
            }
        }
    }

}

컴파일 시 표준 에러 (stderr) 메시지

foodcourt.cpp:100:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  100 | main(){
      | ^~~~
foodcourt.cpp: In function 'int main()':
foodcourt.cpp:102:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |     scanf("%lld%lld%lld",&n,&m,&q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp:106:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         scanf("%lld",&a);
      |         ~~~~~^~~~~~~~~~~
foodcourt.cpp:109:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  109 |             scanf("%lld%lld%lld%lld",&b,&c,&d,&e);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp:116:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  116 |             scanf("%lld%lld%lld",&b,&c,&d);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp:122:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  122 |             scanf("%lld%lld",&b,&c);
      |             ~~~~~^~~~~~~~~~~~~~~~~~

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