oj.uz

답안 #25798

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
25798 2017-06-24T07:34:50 Z kdh9949 즐거운 채소 기르기 (JOI14_growing) C++14
100 / 100
 153 ms 5536 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

struct Dat{
	int x, i;
	bool operator<(const Dat &oth) const {
		return x < oth.x;
	}
};

int n;
Dat a[300010];
ll ans;

struct BIT{
	int dat[300010];
	void upd(int x, int v){ for(; x <= n; x += x & -x) dat[x] += v; }
	int get(int x){ int ret = 0; for(; x; x -= x & -x) ret += dat[x]; return ret; }
	int get(int s, int e){ return get(e) - get(s - 1); }
} B;

int main(){
	scanf("%d", &n);
	for(int i = 1, x; i <= n; i++){
		scanf("%d", &x);
		B.upd(i, 1);
		a[i] = {x, i};
	}
	sort(a + 1, a + n + 1);
	for(int i = 1, j; i <= n; i = j){
		for(j = i; j <= n && a[j].x == a[i].x; j++){
			B.upd(a[j].i, -1);
		}
		for(int k = i; k < j; k++){
			ans += min(B.get(1, a[k].i), B.get(a[k].i, n));
		}
	}
	printf("%lld\n", ans);
}

Compilation message

growing.cpp: In function 'int main()':
growing.cpp:24:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
growing.cpp:26:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &x);
                  ^

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5536 KB Output is correct
2 Correct 0 ms 5536 KB Output is correct
3 Correct 0 ms 5536 KB Output is correct
4 Correct 0 ms 5536 KB Output is correct
5 Correct 0 ms 5536 KB Output is correct
6 Correct 0 ms 5536 KB Output is correct
7 Correct 0 ms 5536 KB Output is correct
8 Correct 0 ms 5536 KB Output is correct
9 Correct 0 ms 5536 KB Output is correct
10 Correct 0 ms 5536 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5536 KB Output is correct
2 Correct 0 ms 5536 KB Output is correct
3 Correct 0 ms 5536 KB Output is correct
4 Correct 0 ms 5536 KB Output is correct
5 Correct 0 ms 5536 KB Output is correct
6 Correct 0 ms 5536 KB Output is correct
7 Correct 0 ms 5536 KB Output is correct
8 Correct 0 ms 5536 KB Output is correct
9 Correct 0 ms 5536 KB Output is correct
10 Correct 0 ms 5536 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5536 KB Output is correct
2 Correct 0 ms 5536 KB Output is correct
3 Correct 0 ms 5536 KB Output is correct
4 Correct 0 ms 5536 KB Output is correct
5 Correct 0 ms 5536 KB Output is correct
6 Correct 0 ms 5536 KB Output is correct
7 Correct 0 ms 5536 KB Output is correct
8 Correct 0 ms 5536 KB Output is correct
9 Correct 0 ms 5536 KB Output is correct
10 Correct 0 ms 5536 KB Output is correct

Subtask #4
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 5536 KB Output is correct
2 Correct 33 ms 5536 KB Output is correct
3 Correct 49 ms 5536 KB Output is correct
4 Correct 69 ms 5536 KB Output is correct
5 Correct 43 ms 5536 KB Output is correct
6 Correct 33 ms 5536 KB Output is correct
7 Correct 49 ms 5536 KB Output is correct
8 Correct 153 ms 5536 KB Output is correct
9 Correct 89 ms 5536 KB Output is correct
10 Correct 99 ms 5536 KB Output is correct