oj.uz

Submission #94283

# Submission time Handle Problem Language Result Execution time Memory
94283 2019-01-17T09:45:09 Z Kastanda Simple game (IZhO17_game) C++11
100 / 100
 106 ms 10872 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10, MXN = 1e6 + 9;
int n, q, A[N], L[MXN], G[MXN];
inline void AddL(int i, int val)
{
    for (i ++; i < MXN; i += i & -i)
        L[i] += val;
}
inline int GetL(int i)
{
    int ret = 0;
    for (i ++; i; i -= i & -i)
        ret += L[i];
    return (ret);
}
inline void AddG(int i, int val)
{
    for (i = MXN - i - 1; i < MXN; i += i & -i)
        G[i] += val;
}
inline int GetG(int i)
{
    int ret = 0;
    for (i = MXN - i - 1; i; i -= i & - i)
        ret += G[i];
    return (ret);
}
int main()
{
    scanf("%d%d", &n, &q);
    for (int i = 1; i <= n; i++)
        scanf("%d", &A[i]);

    for (int i = 1; i < n; i++)
    {
        AddL(max(A[i], A[i + 1]), 1);
        AddG(min(A[i], A[i + 1]), 1);
    }

    for (; q; q --)
    {
        int t, a, b;
        scanf("%d%d", &t, &a);
        if (t == 2)
        {
            printf("%d\n", n - 1 - (GetL(a - 1) + GetG(a + 1)));
            continue;
        }
        scanf("%d", &b);

        if (a > 1)
        {
            AddL(max(A[a], A[a - 1]), -1);
            AddG(min(A[a], A[a - 1]), -1);
        }
        if (a < n)
        {
            AddL(max(A[a], A[a + 1]), -1);
            AddG(min(A[a], A[a + 1]), -1);
        }

        A[a] = b;

        if (a > 1)
        {
            AddL(max(A[a], A[a - 1]), 1);
            AddG(min(A[a], A[a - 1]), 1);
        }
        if (a < n)
        {
            AddL(max(A[a], A[a + 1]), 1);
            AddG(min(A[a], A[a + 1]), 1);
        }
    }
    return 0;
}

Compilation message

game.cpp: In function 'int main()':
game.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~
game.cpp:33:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &A[i]);
         ~~~~~^~~~~~~~~~~~~
game.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &t, &a);
         ~~~~~^~~~~~~~~~~~~~~~
game.cpp:50:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &b);
         ~~~~~^~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 7 ms 6776 KB Output is correct
3 Correct 7 ms 6520 KB Output is correct
4 Correct 7 ms 6648 KB Output is correct
5 Correct 7 ms 6776 KB Output is correct
6 Correct 8 ms 6776 KB Output is correct
7 Correct 4 ms 376 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 7 ms 6776 KB Output is correct
3 Correct 7 ms 6520 KB Output is correct
4 Correct 7 ms 6648 KB Output is correct
5 Correct 7 ms 6776 KB Output is correct
6 Correct 8 ms 6776 KB Output is correct
7 Correct 4 ms 376 KB Output is correct
8 Correct 40 ms 1684 KB Output is correct
9 Correct 73 ms 10692 KB Output is correct
10 Correct 76 ms 10872 KB Output is correct
11 Correct 39 ms 1656 KB Output is correct
12 Correct 49 ms 2936 KB Output is correct
13 Correct 46 ms 2808 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 7 ms 6776 KB Output is correct
3 Correct 7 ms 6520 KB Output is correct
4 Correct 7 ms 6648 KB Output is correct
5 Correct 7 ms 6776 KB Output is correct
6 Correct 8 ms 6776 KB Output is correct
7 Correct 4 ms 376 KB Output is correct
8 Correct 40 ms 1684 KB Output is correct
9 Correct 73 ms 10692 KB Output is correct
10 Correct 76 ms 10872 KB Output is correct
11 Correct 39 ms 1656 KB Output is correct
12 Correct 49 ms 2936 KB Output is correct
13 Correct 46 ms 2808 KB Output is correct
14 Correct 103 ms 10748 KB Output is correct
15 Correct 102 ms 10704 KB Output is correct
16 Correct 94 ms 10744 KB Output is correct
17 Correct 98 ms 10744 KB Output is correct
18 Correct 106 ms 10676 KB Output is correct