oj.uz

Submission #72951

# Submission time Handle Problem Language Result Execution time Memory
72951 2018-08-27T09:38:04 Z win11905 Simple game (IZhO17_game) C++11
100 / 100
 167 ms 5540 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5+5;
const int MX = 1e6;

int n, m, A[N];
int t[MX];

void update(int x, int v) {
    for(; x <= MX; x += x & -x) t[x-1] += v;
}

int query(int x) {
    int v = 0;
    for(; x; x -= x & -x) v += t[x-1];
    return v;
}

int main() {
    scanf("%d %d", &n, &m);
    for(int i = 1; i <= n; ++i) scanf("%d", A+i);
    for(int i = 1; i < n; ++i) {
        update(min(A[i], A[i+1]), 1);
        update(1+max(A[i], A[i+1]), -1);
    } 
    for(int i = 0, a, b, c; i < m; ++i) {
        scanf("%d %d", &a, &b);
        if(a == 1) {
            scanf("%d", &c);
            if(b != 1) {
                update(min(A[b], A[b-1]), -1);
                update(1+max(A[b], A[b-1]), 1);
                update(min(c, A[b-1]), 1);
                update(1+max(c, A[b-1]), -1);
            }
            if(b != n) {
                update(min(A[b], A[b+1]), -1);
                update(1+max(A[b], A[b+1]), 1);
                update(min(c, A[b+1]), 1);
                update(1+max(c, A[b+1]), -1);
            }
            A[b] = c;
        } else printf("%d\n", query(b)); 
    }
    
}

Compilation message

game.cpp: In function 'int main()':
game.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
game.cpp:22:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= n; ++i) scanf("%d", A+i);
                                 ~~~~~^~~~~~~~~~~
game.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &a, &b);
         ~~~~~^~~~~~~~~~~~~~~~~
game.cpp:30:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &c);
             ~~~~~^~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 6 ms 4048 KB Output is correct
3 Correct 7 ms 4144 KB Output is correct
4 Correct 7 ms 4176 KB Output is correct
5 Correct 6 ms 4176 KB Output is correct
6 Correct 6 ms 4176 KB Output is correct
7 Correct 4 ms 4176 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 6 ms 4048 KB Output is correct
3 Correct 7 ms 4144 KB Output is correct
4 Correct 7 ms 4176 KB Output is correct
5 Correct 6 ms 4176 KB Output is correct
6 Correct 6 ms 4176 KB Output is correct
7 Correct 4 ms 4176 KB Output is correct
8 Correct 54 ms 4176 KB Output is correct
9 Correct 72 ms 5396 KB Output is correct
10 Correct 78 ms 5540 KB Output is correct
11 Correct 53 ms 5540 KB Output is correct
12 Correct 66 ms 5540 KB Output is correct
13 Correct 59 ms 5540 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 6 ms 4048 KB Output is correct
3 Correct 7 ms 4144 KB Output is correct
4 Correct 7 ms 4176 KB Output is correct
5 Correct 6 ms 4176 KB Output is correct
6 Correct 6 ms 4176 KB Output is correct
7 Correct 4 ms 4176 KB Output is correct
8 Correct 54 ms 4176 KB Output is correct
9 Correct 72 ms 5396 KB Output is correct
10 Correct 78 ms 5540 KB Output is correct
11 Correct 53 ms 5540 KB Output is correct
12 Correct 66 ms 5540 KB Output is correct
13 Correct 59 ms 5540 KB Output is correct
14 Correct 97 ms 5540 KB Output is correct
15 Correct 101 ms 5540 KB Output is correct
16 Correct 110 ms 5540 KB Output is correct
17 Correct 114 ms 5540 KB Output is correct
18 Correct 167 ms 5540 KB Output is correct