Submission #933849

#	Time	Username	Problem	Language	Result	Execution time	Memory
933849		alexander707070	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	0 / 100	174 ms	34176 KiB

worst_reporter3

#include<bits/stdc++.h>
#define MAXN 500007
using namespace std;

struct qr{
    int t,l,r,id;

    inline friend bool operator < (qr fr,qr sc){
        return fr.t<sc.t;
    }
};

int n,q,t,l,r,tim,ans[MAXN],e[MAXN],d[MAXN];
int pos[MAXN],len[MAXN],pt,br,from,to;
qr query[MAXN];

int calc(int a,int b,int c,int d){
    if(b<c or a>d)return 0;
    if(a>=c and b<=d)return b-a+1;
    if(a>=c)return d-a+1;
    if(b<=d)return b-c+1;
    cout<<1/0;
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>q;
    for(int i=1;i<=n;i++){
        cin>>e[i];
    }

    len[0]=1;
    for(int i=n;i>=1;i--){
        if(e[i]<=e[i-1])br++;
        else{
            pt++;
            len[pt]=br+1;
            pos[pt]=-i;
            d[pt]=e[i];
            br=0;
        }
    }

    for(int i=1;i<=q;i++){
        cin>>t>>l>>r;
        query[i]={t,l,r,i};
    }

    reverse(pos+1,pos+pt+1);
    reverse(len+1,len+pt+1);
    reverse(d+1,d+pt+1);

    sort(query+1,query+q+1);

    for(int i=1;i<=q;i++){

        while(tim<query[i].t){
            tim++; pos[0]++;

            for(int f=1;f<=pt;f++){
                if((pos[f-1]-len[f-1]+1)-pos[f]>=d[f]+1){
                    pos[f]=(pos[f-1]-len[f-1]+1)-1;
                }else break;
            }
        }

        for(int f=0;f<=pt;f++){
            from=pos[f]-len[f]+1; to=pos[f];
            ans[query[i].id]+=calc(from,to,query[i].l,query[i].r);
        }
    }

    for(int i=1;i<=q;i++){
        cout<<ans[i]<<"\n";
    }

    return 0;
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int calc(int, int, int, int)':
worst_reporter3.cpp:22:12: warning: division by zero [-Wdiv-by-zero]
   22 |     cout<<1/0;
      |           ~^~
worst_reporter3.cpp:22:13: warning: control reaches end of non-void function [-Wreturn-type]
   22 |     cout<<1/0;
      |             ^

• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 81