제출 #734464

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
734464		chanhchuong123	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	28 ms	5104 KiB

triusis

#include <bits/stdc++.h>
using namespace std;
#define task ""
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for (int i = (b), _a = (a); i >= _a; --i)

template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}

const int dx[] = {-1, 0, 0, +1};
const int dy[] = {0, -1, +1, 0};

const int MAX = 200200;
int n, m;
int a[MAX];
long long b[MAX];
vector<long long> dp;

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

	if (fopen(task".inp", "r")) {
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}

	cin >> n >> m;
	for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        b[i] = a[i] - 1LL * m * i;
	}
	for (int i = n; i >= 1; --i) if (a[i] <= 1LL * i * m) {
        int pos = upper_bound(all(dp), b[i]) - dp.begin();
        if (pos == dp.size()) dp.push_back(b[i]);
        else dp[pos] = b[i];
	}
	cout << n - dp.size();
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

triusis.cpp: In function 'int main()':
triusis.cpp:43:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         if (pos == dp.size()) dp.push_back(b[i]);
      |             ~~~~^~~~~~~~~~~~
triusis.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37