oj.uz

답안 #13005

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
13005 2015-01-24T07:22:31 Z gs14004 역사적 조사 (JOI14_historical) C++
40 / 100
 4000 ms 9144 KB 
#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;

const int B = 300;

int n,q;
int a[100005];
long long buck[350][350];

vector<int> v;
vector<int> show[100005];

inline int range_count(int p, int q, int o){
    return (int)(upper_bound(show[o].begin(),show[o].end(),q) - lower_bound(show[o].begin(),show[o].end(),p));
}

void query(){
    int p,q;
    scanf("%d %d",&p,&q);
    p--;
    q--;
    if(p/B == q/B){
        long long mv = 0;
        for (int i=p; i<=q; i++) {
            mv = max(mv,1ll * v[a[i]] * range_count(p,q,a[i]));
        }
        printf("%lld\n",mv);
        return;
    }
    else{
        long long mv = 0;
        int i;
        for (i=p; i%B != 0; i++) {
            mv = max(mv,1ll * v[a[i]] * range_count(p,q,a[i]));
        }
        mv = max(mv,buck[i/B][q/B]);
        for (int i=q/B*B+1; i<=q; i++) {
            mv = max(mv,1ll * v[a[i]] * range_count(p,q,a[i]));
        }
        printf("%lld\n",mv);
    }
}

int main(){
    scanf("%d %d",&n,&q);
    for (int i=0; i<n; i++) {
        scanf("%d",&a[i]);
        v.push_back(a[i]);
    }
    sort(v.begin(),v.end());
    v.resize(unique(v.begin(),v.end()) - v.begin());
    for (int i=0; i<n; i++) {
        a[i] = (int)(lower_bound(v.begin(),v.end(),a[i]) - v.begin());
        show[a[i]].push_back(i);
    }
    // buck[i][j] = i * B ~ j * B
    for (int i=0; i<n; i+=B) {
        long long cnt[100005] = {};
        long long maxv = 0;
        for (int j=i; j<n; j++) {
            cnt[a[j]] += v[a[j]];
            maxv = max(maxv,cnt[a[j]]);
            if(j % B== 0){
                buck[i/B][j/B] = maxv;
            }
        }
    }
    while (q--) {
        query();
    }
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5588 KB Output is correct
2 Correct 0 ms 5588 KB Output is correct
3 Correct 0 ms 5592 KB Output is correct
4 Correct 0 ms 5588 KB Output is correct
5 Correct 0 ms 5588 KB Output is correct
6 Correct 0 ms 5592 KB Output is correct
7 Correct 0 ms 5592 KB Output is correct
8 Correct 0 ms 5592 KB Output is correct
9 Correct 0 ms 5592 KB Output is correct
10 Correct 0 ms 5592 KB Output is correct
11 Correct 0 ms 5588 KB Output is correct
12 Correct 0 ms 5592 KB Output is correct
13 Correct 0 ms 5592 KB Output is correct
14 Correct 0 ms 5592 KB Output is correct
15 Correct 0 ms 5588 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5592 KB Output is correct
2 Correct 4 ms 5592 KB Output is correct
3 Correct 8 ms 5588 KB Output is correct
4 Correct 24 ms 5592 KB Output is correct
5 Correct 64 ms 5592 KB Output is correct
6 Correct 120 ms 5592 KB Output is correct
7 Correct 108 ms 5592 KB Output is correct
8 Correct 136 ms 5588 KB Output is correct
9 Correct 128 ms 5592 KB Output is correct
10 Correct 60 ms 5588 KB Output is correct
11 Correct 64 ms 5588 KB Output is correct
12 Correct 72 ms 5588 KB Output is correct
13 Correct 72 ms 5592 KB Output is correct
14 Correct 80 ms 5592 KB Output is correct
15 Correct 76 ms 5592 KB Output is correct
16 Correct 136 ms 5592 KB Output is correct
17 Correct 96 ms 5588 KB Output is correct
18 Correct 76 ms 5592 KB Output is correct
19 Correct 56 ms 5592 KB Output is correct
20 Correct 52 ms 5592 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 5588 KB Output is correct
2 Correct 0 ms 5588 KB Output is correct
3 Correct 0 ms 5596 KB Output is correct
4 Correct 0 ms 5592 KB Output is correct
5 Correct 4 ms 5592 KB Output is correct
6 Correct 0 ms 5592 KB Output is correct
7 Correct 4 ms 5588 KB Output is correct
8 Correct 12 ms 5720 KB Output is correct
9 Correct 12 ms 5984 KB Output is correct
10 Correct 40 ms 6536 KB Output is correct
11 Correct 1044 ms 6628 KB Output is correct
12 Correct 104 ms 6636 KB Output is correct
13 Correct 540 ms 6764 KB Output is correct
14 Correct 652 ms 7428 KB Output is correct
15 Correct 244 ms 7820 KB Output is correct
16 Correct 424 ms 9140 KB Output is correct
17 Correct 672 ms 6632 KB Output is correct
18 Correct 1368 ms 6636 KB Output is correct
19 Correct 336 ms 9144 KB Output is correct
20 Correct 160 ms 9140 KB Output is correct

Subtask #4
0.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 296 ms 5588 KB Output is correct
2 Correct 540 ms 5856 KB Output is correct
3 Correct 648 ms 5988 KB Output is correct
4 Correct 756 ms 6248 KB Output is correct
5 Correct 944 ms 6380 KB Output is correct
6 Correct 1628 ms 6244 KB Output is correct
7 Correct 2712 ms 6504 KB Output is correct
8 Correct 3184 ms 6504 KB Output is correct
9 Correct 2840 ms 6584 KB Output is correct
10 Correct 2348 ms 7128 KB Output is correct
11 Correct 3292 ms 6872 KB Output is correct
12 Execution timed out 4000 ms 6632 KB Program timed out
13 Halted 0 ms 0 KB -