답안 #237323

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
237323	2020-06-06T01:45:33 Z	mohamedsobhi777	Vudu (COCI15_vudu)	C++14	42 / 140	672 ms	65540 KB

vudu

#include <bits/stdc++.h>

using namespace std;

const int N = 1e6 + 7;

int n, k;
int a[N];


vector<int> srtd ; 
map<long long, int > mp ;
long long bit[N] ;

void add(int x){
        for(;x < N ;x += x&-x ){
                bit[x] ++ ; 
        }
}

long long get(long long x){
        if(x < 0 ) return 0; 
        long long ret =0 ; 
        for(;x;x-=x&-x){
                ret+=bit[x] ;
        }
        return ret ; 
}

int t =1 ; 

long long com(long long x){
        if(mp[x]){
                return mp[x] ;
        }
        mp[x] = t++ ; 
        return t-1 ; 
}

void init(){
        srtd.push_back(0) ; 
        sort(srtd.begin() , srtd.end()) ; 

        for(int i = 0 ; i < (int) srtd.size() ;i++){
                com(srtd[i]) ;
        }
}

int main()
{
        ios_base::sync_with_stdio(0);
        cin.tie(0);
        //freopen("in.in", "r", stdin);

        cin >> n;
        for (int i = 0; i < n; i++)
        {
                cin >> a[i];
        }

        cin >> k;
        
        long long sum = 0 ;

        for (int i = 0; i < n; i++)
        {
                a[i] -= k;
                sum+= a[i] ; 
                srtd.push_back(sum) ;
        }

        init() ;
        
        long long ans = 0;
        long long pre = 0;
        add(com(0)) ; 
        for (int i = 0; i < n; i++)
        {
                pre += a[i];
                ans+= get(com(pre)) ;
                add(com(pre)) ; 
        }
        cout << ans;
        return 0;
}

Subtask #1

42.0 / 140.0

#	결과	실행 시간	메모리	Grader output
1	Correct	11 ms	896 KB	Output is correct
2	Correct	8 ms	768 KB	Output is correct
3	Correct	9 ms	768 KB	Output is correct
4	Runtime error	603 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
5	Runtime error	672 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
6	Runtime error	549 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
7	Runtime error	602 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
8	Runtime error	577 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
9	Runtime error	612 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
10	Runtime error	591 ms	65540 KB	Execution killed with signal 9 (could be triggered by violating memory limits)