oj.uz

답안 #818421

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
818421 2023-08-10T04:47:47 Z 반딧불(#10131) Fish 2 (JOI22_fish2) C++17
13 / 100
 4000 ms 5036 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

ll arr[100002];

struct segTree{
    int tree[400002];

    void init(int i, int l, int r, ll* A){
        if(l==r){
            tree[i] = l;
            return;
        }
        int m = (l+r)>>1;
        init(i*2, l, m, A);
        init(i*2+1, m+1, r, A);
        tree[i] = (arr[tree[i*2]] > arr[tree[i*2+1]]) ? tree[i*2] : tree[i*2+1];
    }

    void update(int i, int l, int r, int x, int v){
        if(l==r) return;
        int m = (l+r)>>1;
        if(x<=m) update(i*2, l, m, x, v);
        else update(i*2+1, m+1, r, x, v);
        tree[i] = (arr[tree[i*2]] > arr[tree[i*2+1]]) ? tree[i*2] : tree[i*2+1];
    }

    int query(int i, int l, int r, int s, int e){
        if(r<s || e<l) return 0;
        if(s<=l && r<=e) return tree[i];
        int m = (l+r)>>1;
        int t1 = query(i*2, l, m, s, e), t2 = query(i*2+1, m+1, r, s, e);
        return (arr[t1] > arr[t2]) ? t1 : t2;
    }
} tree;

struct Fenwick{
    int n;
    ll tree[100002];

    void init(int _n){
        n = _n;
        for(int i=0; i<=n; i++) tree[i] = 0;
    }

    void add(int x, int v){
        while(x<=n){
            tree[x] += v;
            x += x&-x;
        }
    }

    ll sum(int x){
        ll ret = 0;
        while(x){
            ret += tree[x];
            x -= x&-x;
        }
        return ret;
    }

    ll sum(int l, int r){
        return sum(r) - sum(l-1);
    }
} fenwick;

int n, q;

int dnc(int l, int r, ll lim = 0){
    if(l>r) return 0;
    int m = tree.query(1, 1, n, l, r);
    ll sum = fenwick.sum(l, r);
    if(sum < lim) return 0;
    int ret = 1;

    ll tsum = fenwick.sum(l, m-1);
    if(tsum >= arr[m]) ret += dnc(l, m-1, arr[m]);
    tsum = fenwick.sum(m+1, r);
    if(tsum >= arr[m]) ret += dnc(m+1, r, arr[m]);
    return ret;
}

int main(){
    scanf("%d", &n);
    for(int i=1; i<=n; i++) scanf("%lld", &arr[i]);
    tree.init(1, 1, n, arr);
    fenwick.init(n);
    for(int i=1; i<=n; i++) fenwick.add(i, arr[i]);

    scanf("%d", &q);
    while(q--){
        int t, l, r;
        scanf("%d %d %d", &t, &l, &r);
        if(t==1){
            fenwick.add(l, r-arr[l]);
            arr[l] = r;
            tree.update(1, 1, n, l, r);
            continue;
        }
        printf("%d\n", dnc(l, r));
    }
}

Compilation message

fish2.cpp: In function 'int main()':
fish2.cpp:87:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
fish2.cpp:88:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     for(int i=1; i<=n; i++) scanf("%lld", &arr[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~~
fish2.cpp:93:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
fish2.cpp:96:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |         scanf("%d %d %d", &t, &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 312 KB Output is correct
11 Correct 4 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 5 ms 316 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 12 ms 3380 KB Output is correct
3 Correct 10 ms 3132 KB Output is correct
4 Correct 12 ms 3412 KB Output is correct
5 Correct 10 ms 3156 KB Output is correct
6 Correct 24 ms 3744 KB Output is correct
7 Correct 9 ms 3104 KB Output is correct
8 Correct 23 ms 3784 KB Output is correct
9 Correct 9 ms 3028 KB Output is correct
10 Correct 12 ms 3412 KB Output is correct
11 Correct 9 ms 3172 KB Output is correct
12 Correct 12 ms 3028 KB Output is correct
13 Correct 10 ms 3028 KB Output is correct
14 Correct 18 ms 4992 KB Output is correct
15 Correct 18 ms 4948 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 312 KB Output is correct
11 Correct 4 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 5 ms 316 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 12 ms 3380 KB Output is correct
23 Correct 10 ms 3132 KB Output is correct
24 Correct 12 ms 3412 KB Output is correct
25 Correct 10 ms 3156 KB Output is correct
26 Correct 24 ms 3744 KB Output is correct
27 Correct 9 ms 3104 KB Output is correct
28 Correct 23 ms 3784 KB Output is correct
29 Correct 9 ms 3028 KB Output is correct
30 Correct 12 ms 3412 KB Output is correct
31 Correct 9 ms 3172 KB Output is correct
32 Correct 12 ms 3028 KB Output is correct
33 Correct 10 ms 3028 KB Output is correct
34 Correct 18 ms 4992 KB Output is correct
35 Correct 18 ms 4948 KB Output is correct
36 Correct 152 ms 4240 KB Output is correct
37 Correct 85 ms 3156 KB Output is correct
38 Correct 52 ms 3236 KB Output is correct
39 Correct 75 ms 3796 KB Output is correct
40 Correct 52 ms 3228 KB Output is correct
41 Correct 2451 ms 3860 KB Output is correct
42 Correct 3295 ms 3860 KB Output is correct
43 Correct 14 ms 3000 KB Output is correct
44 Correct 15 ms 3028 KB Output is correct
45 Correct 215 ms 3604 KB Output is correct
46 Correct 317 ms 3484 KB Output is correct
47 Correct 29 ms 3168 KB Output is correct
48 Correct 13 ms 3284 KB Output is correct
49 Correct 54 ms 3484 KB Output is correct
50 Correct 1102 ms 5016 KB Output is correct
51 Execution timed out 4070 ms 5036 KB Time limit exceeded
52 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 12 ms 3380 KB Output is correct
3 Correct 10 ms 3132 KB Output is correct
4 Correct 12 ms 3412 KB Output is correct
5 Correct 10 ms 3156 KB Output is correct
6 Correct 24 ms 3744 KB Output is correct
7 Correct 9 ms 3104 KB Output is correct
8 Correct 23 ms 3784 KB Output is correct
9 Correct 9 ms 3028 KB Output is correct
10 Correct 12 ms 3412 KB Output is correct
11 Correct 9 ms 3172 KB Output is correct
12 Correct 12 ms 3028 KB Output is correct
13 Correct 10 ms 3028 KB Output is correct
14 Correct 18 ms 4992 KB Output is correct
15 Correct 18 ms 4948 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 3893 ms 4924 KB Output is correct
18 Execution timed out 4081 ms 4956 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 12 ms 3380 KB Output is correct
3 Correct 10 ms 3132 KB Output is correct
4 Correct 12 ms 3412 KB Output is correct
5 Correct 10 ms 3156 KB Output is correct
6 Correct 24 ms 3744 KB Output is correct
7 Correct 9 ms 3104 KB Output is correct
8 Correct 23 ms 3784 KB Output is correct
9 Correct 9 ms 3028 KB Output is correct
10 Correct 12 ms 3412 KB Output is correct
11 Correct 9 ms 3172 KB Output is correct
12 Correct 12 ms 3028 KB Output is correct
13 Correct 10 ms 3028 KB Output is correct
14 Correct 18 ms 4992 KB Output is correct
15 Correct 18 ms 4948 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Execution timed out 4080 ms 3764 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 312 KB Output is correct
11 Correct 4 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 5 ms 316 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 12 ms 3380 KB Output is correct
23 Correct 10 ms 3132 KB Output is correct
24 Correct 12 ms 3412 KB Output is correct
25 Correct 10 ms 3156 KB Output is correct
26 Correct 24 ms 3744 KB Output is correct
27 Correct 9 ms 3104 KB Output is correct
28 Correct 23 ms 3784 KB Output is correct
29 Correct 9 ms 3028 KB Output is correct
30 Correct 12 ms 3412 KB Output is correct
31 Correct 9 ms 3172 KB Output is correct
32 Correct 12 ms 3028 KB Output is correct
33 Correct 10 ms 3028 KB Output is correct
34 Correct 18 ms 4992 KB Output is correct
35 Correct 18 ms 4948 KB Output is correct
36 Correct 152 ms 4240 KB Output is correct
37 Correct 85 ms 3156 KB Output is correct
38 Correct 52 ms 3236 KB Output is correct
39 Correct 75 ms 3796 KB Output is correct
40 Correct 52 ms 3228 KB Output is correct
41 Correct 2451 ms 3860 KB Output is correct
42 Correct 3295 ms 3860 KB Output is correct
43 Correct 14 ms 3000 KB Output is correct
44 Correct 15 ms 3028 KB Output is correct
45 Correct 215 ms 3604 KB Output is correct
46 Correct 317 ms 3484 KB Output is correct
47 Correct 29 ms 3168 KB Output is correct
48 Correct 13 ms 3284 KB Output is correct
49 Correct 54 ms 3484 KB Output is correct
50 Correct 1102 ms 5016 KB Output is correct
51 Execution timed out 4070 ms 5036 KB Time limit exceeded
52 Halted 0 ms 0 KB -