oj.uz

답안 #123919

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123919 2019-07-02T09:38:08 Z songc 즐거운 채소 기르기 (JOI14_growing) C++14
100 / 100
 152 ms 9316 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;

int N;
int A[303030], L[303030], R[303030], T[303030];
vector<int> comp;
LL ans;

void update(int t){
    while (t<=N){
        T[t]++;
        t += t & -t;
    }
}

int read(int t){
    int ret=0;
    while (t){
        ret += T[t];
        t -= t & -t;
    }
    return ret;
}

int main(){
    scanf("%d", &N);
    for (int i=1; i<=N; i++) {
        scanf("%d", &A[i]);
        comp.push_back(A[i]);
    }
    sort(comp.begin(), comp.end());
    comp.erase(unique(comp.begin(), comp.end()), comp.end());
    for (int i=1; i<=N; i++) A[i] = lower_bound(comp.begin(), comp.end(), A[i]) - comp.begin() + 1;
    for (int i=1; i<=N; i++){
        L[i] = read(N)-read(A[i]);
        update(A[i]);
    }
    memset(T, 0, sizeof T);
    for (int i=N; i>=1; i--){
        R[i] = read(N)-read(A[i]);
        update(A[i]);
    }
    for (int i=1; i<=N; i++) ans += min(L[i], R[i]);
    printf("%lld\n", ans);
    return 0;
}

Compilation message

growing.cpp: In function 'int main()':
growing.cpp:28:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
growing.cpp:30:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &A[i]);
         ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 4 ms 1528 KB Output is correct
3 Correct 3 ms 1552 KB Output is correct
4 Correct 3 ms 1528 KB Output is correct
5 Correct 3 ms 1528 KB Output is correct
6 Correct 3 ms 1528 KB Output is correct
7 Correct 3 ms 1528 KB Output is correct
8 Correct 3 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 3 ms 1528 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 1656 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 3 ms 1528 KB Output is correct
4 Correct 3 ms 1528 KB Output is correct
5 Correct 3 ms 1528 KB Output is correct
6 Correct 3 ms 1528 KB Output is correct
7 Correct 3 ms 1528 KB Output is correct
8 Correct 3 ms 1528 KB Output is correct
9 Correct 3 ms 1528 KB Output is correct
10 Correct 3 ms 1528 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 3 ms 1528 KB Output is correct
3 Correct 4 ms 1528 KB Output is correct
4 Correct 4 ms 1656 KB Output is correct
5 Correct 5 ms 1656 KB Output is correct
6 Correct 4 ms 1656 KB Output is correct
7 Correct 4 ms 1656 KB Output is correct
8 Correct 5 ms 1656 KB Output is correct
9 Correct 6 ms 1656 KB Output is correct
10 Correct 5 ms 1656 KB Output is correct

Subtask #4
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 2804 KB Output is correct
2 Correct 55 ms 4212 KB Output is correct
3 Correct 83 ms 5224 KB Output is correct
4 Correct 119 ms 6764 KB Output is correct
5 Correct 68 ms 6760 KB Output is correct
6 Correct 41 ms 4208 KB Output is correct
7 Correct 92 ms 6916 KB Output is correct
8 Correct 135 ms 9188 KB Output is correct
9 Correct 141 ms 9316 KB Output is correct
10 Correct 152 ms 9316 KB Output is correct