oj.uz

Submission #44281

# Submission time Handle Problem Language Result Execution time Memory
44281 2018-03-31T08:52:24 Z Extazy Money (IZhO17_money) C++17
0 / 100
 2 ms 616 KB 
#include <bits/stdc++.h>
#define endl '\n'

using namespace std;

const int N = 1000007;

int n,a[N],it[N],ans;

void update(int pos, int val) {
    for(;pos<N;pos+=pos&(-pos)) it[pos]+=val;
}

int query(int pos) {
    int ans=0;
    for(;pos>=1;pos-=pos&(-pos)) ans+=it[pos];
    return ans;
}

int query(int l, int r) {
    return l>r ? 0 : query(r)-query(l-1);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int i,j;

    scanf("%d", &n);
    for(i=1;i<=n;i++) {
        scanf("%d", &a[i]);
    }

    for(i=1;i<=n;i++) {
        ++ans;

        j=i;
        while(j+1<=n && a[j]<=a[j+1] && query(a[i]+1,a[j]-1)==0) {
            ++j;
        }

        for(;i<=j;i++) {
            update(a[i],1);
        }
    }

    printf("%d\n", ans);
    
    return 0;
}

Compilation message

money.cpp: In function 'int main()':
money.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
money.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
         ~~~~~^~~~~~~~~~~~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 616 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 616 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 616 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 616 KB Output isn't correct
3 Halted 0 ms 0 KB -