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Submission #903846

# Submission time Handle Problem Language Result Execution time Memory
903846 2024-01-11T12:20:46 Z LucaIlie Fish 2 (JOI22_fish2) C++17
5 / 100
 4000 ms 3084 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 1e5;
int v[MAX_N + 1], leftt[MAX_N + 1], rightt[MAX_N + 1];
long long s[MAX_N + 1];

void init( int n ) {
    for ( int i = 1; i <= n; i++ )
        s[i] = s[i - 1] + v[i];

    for ( int i = 1; i < n; i++ ) {
        int l = 0, r = i + 1;
        while ( r - l > 1 ) {
            int mid = (l + r) / 2;
            if ( s[i] - s[mid - 1] >= v[i + 1] )
                l = mid;
            else
                r = mid;
        }
        leftt[i] = l;
    }

    for ( int i = 2; i <= n; i++ ) {
        int l = i - 1, r = n + 1;
        while ( r - l > 1 ) {
            int mid = (l + r) / 2;
            if ( s[mid] - s[i - 1] >= v[i - 1] )
                r = mid;
            else
                l = mid;
        }
        rightt[i] = r;
    }
}

int main() {
    int n;

    cin >> n;
    for ( int i = 1; i <= n; i++ )
        cin >> v[i];

    init( n );

    int q;
    cin >> q;
    while ( q-- ) {
        int t, l, r;

        cin >> t >> l >> r;

        if ( t == 1 ) {
            v[l] = r;
            init( n );
            continue;
        }

        int ans = 0;
        for ( int i = l; i <= r; i++ ) {
            int p;

            p = i;
            while ( p >= l + 1 && (rightt[p] <= i || (rightt[p] <= r && leftt[rightt[p] - 1] >= p)) )
                p--;

            if ( p != l )
                continue;

            p = i;
            while ( p <= r - 1 && (leftt[p] >= i || (leftt[p] >= l && rightt[leftt[p] + 1] <= p)) )
                p++;
            if ( p == r )
                ans++;
        }

        cout << ans << "\n";
    }

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 352 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 13 ms 360 KB Output is correct
6 Correct 5 ms 360 KB Output is correct
7 Correct 12 ms 360 KB Output is correct
8 Correct 7 ms 360 KB Output is correct
9 Correct 9 ms 612 KB Output is correct
10 Correct 19 ms 360 KB Output is correct
11 Correct 12 ms 360 KB Output is correct
12 Correct 16 ms 360 KB Output is correct
13 Correct 5 ms 360 KB Output is correct
14 Correct 12 ms 356 KB Output is correct
15 Correct 10 ms 612 KB Output is correct
16 Correct 8 ms 360 KB Output is correct
17 Correct 11 ms 360 KB Output is correct
18 Correct 4 ms 360 KB Output is correct
19 Correct 12 ms 360 KB Output is correct
20 Correct 30 ms 360 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 851 ms 2948 KB Output is correct
3 Correct 124 ms 2640 KB Output is correct
4 Correct 1876 ms 2952 KB Output is correct
5 Correct 246 ms 2712 KB Output is correct
6 Execution timed out 4006 ms 3084 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 352 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 13 ms 360 KB Output is correct
6 Correct 5 ms 360 KB Output is correct
7 Correct 12 ms 360 KB Output is correct
8 Correct 7 ms 360 KB Output is correct
9 Correct 9 ms 612 KB Output is correct
10 Correct 19 ms 360 KB Output is correct
11 Correct 12 ms 360 KB Output is correct
12 Correct 16 ms 360 KB Output is correct
13 Correct 5 ms 360 KB Output is correct
14 Correct 12 ms 356 KB Output is correct
15 Correct 10 ms 612 KB Output is correct
16 Correct 8 ms 360 KB Output is correct
17 Correct 11 ms 360 KB Output is correct
18 Correct 4 ms 360 KB Output is correct
19 Correct 12 ms 360 KB Output is correct
20 Correct 30 ms 360 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 851 ms 2948 KB Output is correct
23 Correct 124 ms 2640 KB Output is correct
24 Correct 1876 ms 2952 KB Output is correct
25 Correct 246 ms 2712 KB Output is correct
26 Execution timed out 4006 ms 3084 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 851 ms 2948 KB Output is correct
3 Correct 124 ms 2640 KB Output is correct
4 Correct 1876 ms 2952 KB Output is correct
5 Correct 246 ms 2712 KB Output is correct
6 Execution timed out 4006 ms 3084 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 851 ms 2948 KB Output is correct
3 Correct 124 ms 2640 KB Output is correct
4 Correct 1876 ms 2952 KB Output is correct
5 Correct 246 ms 2712 KB Output is correct
6 Execution timed out 4006 ms 3084 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 352 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 13 ms 360 KB Output is correct
6 Correct 5 ms 360 KB Output is correct
7 Correct 12 ms 360 KB Output is correct
8 Correct 7 ms 360 KB Output is correct
9 Correct 9 ms 612 KB Output is correct
10 Correct 19 ms 360 KB Output is correct
11 Correct 12 ms 360 KB Output is correct
12 Correct 16 ms 360 KB Output is correct
13 Correct 5 ms 360 KB Output is correct
14 Correct 12 ms 356 KB Output is correct
15 Correct 10 ms 612 KB Output is correct
16 Correct 8 ms 360 KB Output is correct
17 Correct 11 ms 360 KB Output is correct
18 Correct 4 ms 360 KB Output is correct
19 Correct 12 ms 360 KB Output is correct
20 Correct 30 ms 360 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 851 ms 2948 KB Output is correct
23 Correct 124 ms 2640 KB Output is correct
24 Correct 1876 ms 2952 KB Output is correct
25 Correct 246 ms 2712 KB Output is correct
26 Execution timed out 4006 ms 3084 KB Time limit exceeded
27 Halted 0 ms 0 KB -