Submission #103020

#	Time	Username	Problem	Language	Result	Execution time	Memory
103020		rzbt	Poklon (COCI17_poklon)	C++14	0 / 140	564 ms	42232 KiB

poklon

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 500005
using namespace std;

int n,q;

int niz[MAXN];
set<int> s;
map<int,int> m;
int prosli[MAXN];
int proslix[MAXN];

int bit[MAXN];
void dodaj(int p,int x){
    if(p==0)return;
    for(;p<MAXN;p+=(-p)&p)
        bit[p]+=x;
}
int dobij(int p){
    int z=0;
    for(;p>0;p-=(-p)&p)
        z+=bit[p];

    return z;
}
int res[MAXN];
vector<pair<int,int>> omega [MAXN];

int main()
{
    scanf("%d %d", &n, &q);
    for(int i=1;i<=n;i++){
        scanf("%d",niz+i);
        s.insert(niz[i]);
    }
    int bbb=1;
    for(auto x:s){
        m[x]=bbb;
        bbb++;
    }
    for(int i=1;i<=n;i++){
        niz[i]=m[niz[i]];
        prosli[i]=proslix[niz[i]];
        proslix[niz[i]]=i;
    }
    for(int i=1;i<=q;i++){
        int t1,t2;
        scanf("%d %d", &t1, &t2);
        omega[t2].pb(mp(t1,i));
    }
    for(int i=1;i<=n;i++){
        dodaj(prosli[i],1);
        dodaj(prosli[prosli[i]],-2);
        for(auto x:omega[i])
            res[x.second]=dobij(i)-dobij(x.first-1);

    }

    for(int i=1;i<=q;i++)printf("%d\n",res[i]);


    return 0;
}

Compilation message (stderr)

poklon.cpp: In function 'int main()':
poklon.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~~
poklon.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",niz+i);
         ~~~~~^~~~~~~~~~~~
poklon.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &t1, &t2);
         ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 140