oj.uz

답안 #331603

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
331603 2020-11-29T05:34:07 Z limabeans Money (IZhO17_money) C++17
0 / 100
 1 ms 364 KB 
#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;




int n;
int a[maxn];

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

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


    set<int> act;
    for (int i=0; i<n; i++) {
	act.insert(i);
    }

    int res = 0;

    
    for (int i=n-1; i>=0; ) {
	res++;
	vector<int> rm={a[i]};
	auto iter = act.lower_bound(a[i]);
	while (true) {
	    --i;
	    if (i<0) break;
	    if (iter==act.begin()) break;
	    --iter;
	    if (a[i]!=*iter) break;
	    rm.push_back(*iter);
	}

	for (int x: rm) act.erase(x);
    }


    cout<<res<<endl;    
    return 0;
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -