Submission #166400

#	Time	Username	Problem	Language	Result	Execution time	Memory
166400		abil	Money (IZhO17_money)	C++14	0 / 100	17 ms	376 KiB

money

#include <bits/stdc++.h>
 
#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
#define int long long
 
using namespace std;
 
const int N = (1e6 + 12);
const int mod = (1e9 + 7);
const int INF = (1e15 + 9);

int t[N], a[N], n, cnt[N];

void update(int ind){
	for(;ind <= n; ind = ind + (ind & (-ind))){
		t[ind]++;
	}
}

int get(int pos){
	int res = 0;
	for(;pos >= 1; pos = pos - (pos & (-pos))){
		res += t[pos];
	}
	return res;
}
main()
{
	int ans = 0;
	cin >> n;
	for(int i = 1;i <= n; i++){
		scanf("%lld", &a[i]);
	}
	int i = 1;
	while(i <= n){
		int j = i + 1;
		ans++;
		while(j <= n && a[j] >= a[j - 1] && get(a[j] - 1) - get(a[i]) == 0){
			j++;
		}
		while(i < j) {
				update(a[i]);
				i++;
		}
	}
	cout << ans;
}

Compilation message (stderr)

money.cpp:31:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
money.cpp: In function 'int main()':
money.cpp:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &a[i]);
   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55