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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#567502#9313. Make MaxYFffffffffCompile Error//C++231.9kb2024-09-16 12:21:072024-09-16 12:21:09

Judging History

你现在查看的是最新测评结果

  • [2024-09-18 15:56:24]
  • hack成功,自动添加数据
  • (/hack/836)
  • [2024-09-16 12:21:09]
  • 评测
  • [2024-09-16 12:21:07]
  • 提交

answer

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

// 宏定义,用于简化循环
#define rep(i, a, n) for (int i = a; i < n; i++)
#define per(i, a, n) for (int i = n - 1; i >= a; i--)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())

// 类型定义
typedef vector<int> VI;
typedef basic_string<int> BI;
typedef long long ll;
typedef pair<int, int> PII;
typedef double db;

// 随机数生成器和模数
mt19937 mrand(random_device{}());
const ll mod = 1000000007;

// 随机数生成函数
int rnd(int x) {
    return mrand() % x;
}

// 快速幂函数
ll powmod(ll a, ll b) {
    ll res = 1;
    a %= mod;
    assert(b >= 0);
    while (b) {
        if (b & 1) res = res * a % mod;
        a = a * a % mod;
        b >>= 1;
    }
    return res;
}

// 最大公约数函数
ll gcd(ll a, ll b) {
    return b ? gcd(b, a % b) : a;
}

// 常量定义
const int N = 1010000;
int n;

// 全局变量
int stk[N], a[N], l[N], r[N];
ll ans;
map<int, int> cnt;

// 深度优先搜索函数
void dfs(int u, int dep) {
    ans += dep;
    if (l[u]) dfs(l[u], dep + (a[l[u]] != a[u]));
    if (r[u]) dfs(r[u], dep + (a[r[u]] != a[u]));
}

// 构建函数
void build() {
    int top = 0;
    rep(i, 1, n + 1) l[i] = r[i] = 0;
    rep(i, 1, n + 1) {
        int k = top;
        while (k > 0 && a[stk[k - 1]] < a[i]) --k;
        if (k) r[stk[k - 1]] = i;
        if (k < top) l[i] = stk[k];
        stk[k++] = i;
        top = k;
    }
    cnt.clear();
    ans = 0;
    dfs(stk[0], 0);
    cout << ans << "\n";
}

// 解决问题的函数
void solve() {
    cin >> n;
    rep(i, 1, n + 1) cin >> a[i];
    build();
}

// 主函数
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    for (cin >> _; _; _) {
        solve();
    }
}

详细

answer.code: In function ‘int main()’:
answer.code:94:17: error: ‘_’ was not declared in this scope
   94 |     for (cin >> _; _; _) {
      |                 ^