Submission #35188

#	Time	Username	Problem	Language	Result	Execution time	Memory
35188		ulna	Money (IZhO17_money)	C++11	45 / 100	1500 ms	52784 KiB

money

#include <bits/stdc++.h>
using namespace std;

// why am I so weak

int n;
int a[1000055];

inline void read(int &x) {
	x = 0;
	char ch = 0;

	while (ch < '0' || ch > '9') ch = getchar();

	while (ch >= '0' && ch <= '9') {
		x = x * 10 + (ch - '0');
		ch = getchar();
	}
}
int main() {
	scanf("%d", &n);

	for (int i = 0; i < n; i++) {
		read(a[i]);
	}

	set<int> s;

	s.insert(0), s.insert((int)1e7);

	int lb = 0, ub = (int)1e7;
	int res = 1;

	for (int i = 0; i < n; i++) {
		if (lb <= a[i] && a[i] <= ub) {
			s.insert(a[i]);
			lb = a[i];
			continue;
		}

		lb = a[i];
		ub = *s.upper_bound(a[i]);

		res++;
		s.insert(a[i]);
	}

	printf("%d\n", res);

	return 0;
}

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:21:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^

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