oj.uz

답안 #143811

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
143811 2019-08-15T08:42:07 Z MladenP Money (IZhO17_money) C++17
0 / 100
 2 ms 376 KB 
#include <bits/stdc++.h>
#define MAXN 1000010
#define PRINT(x) cerr<<#x<<'='<<x<<endl;
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
using namespace std;
int a[MAXN], bit[MAXN], N, l, r;
pii b[MAXN];
int query(int idx) {
    int rez = 0;
    while(idx) {
        rez += bit[idx];
        idx -= idx&-idx;
    }
    return rez;
}
void update(int idx, int val) {
    while(idx < MAXN) {
        bit[idx] += val;
        idx += idx&-idx;
    }
}
int main() {
    cin >> N;
    for(int i = 1; i <= N; i++) cin >> a[i];
    for(int i = 1; i <= N; i++) b[i] = {a[i], i};
    sort(b+1, b+1+N);
    for(int i = 1; i <= N; i++) a[b[i].se] = i;
    for(int i = 1; i <= N; i++) update(i, +1);
    int rez = 1;
    update(a[1], -1);
    for(int i = 2; i <= N; i++) {
        update(a[i], -1);
        if(a[i-1] > a[i] || query(a[i]-1)-query(a[i-1]) != a[i]-a[i-1]-1) rez++;
    }
    cout << rez;
    return 0;
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -