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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
#584699#9313. Make Maxzwu2021016337WA 47ms9816kbC++202.7kb2024-09-23 16:15:242024-09-23 16:15:24

Judging History

你现在查看的是最新测评结果

  • [2024-09-23 16:15:24]
  • 评测
  • 测评结果:WA
  • 用时:47ms
  • 内存:9816kb
  • [2024-09-23 16:15:24]
  • 提交

answer

#include <bits/stdc++.h> // By Lucky Ox
#define int long long
#define endl "\n"
#define pii pair<int, int>
#define PI atan(1.0) * 4
using namespace std;
using i128 = __int128;
typedef unsigned long long ull;
const long long mod = 1000000000000002493, INF = 0x3f3f3f3f3f3f3f3f;
int P(int x, int p){ return (x % p + p) % p; }
int lcm(int x, int y) { return x / gcd(x, y) * y; }
int gcd(int a, int b) { return b == 0 ? a : gcd(b, a % b); }
int len_10(int x) { int len = 0; while(x) { x /= 10; len ++ ; } return len; }
int q_pow(int a, int k, int p) { int res = 1; while (k) { if (k & 1) res = res * a % p; k >>= 1; a = a * a % p; } return res; }
int to_int(string s) { int val = 0; for(int i = 0; i < (int)s.size(); i ++ ){val *= 10; val += s[i] - '0';}return val;}//注意:s是空串也会返回0
i128 read() { i128 x = 0; char c = getchar(); while (c < '0' || c > '9') c = getchar(); while (c >= '0' && c <= '9') {
x = x * 10 + c - '0'; c = getchar(); } return x; } //i128输入
void print(i128 x) {if(x > 9) print(x / 10); putchar(x % 10 + '0'); }//i128输出
//用__lg()来求一个数二进制下的位数 返回的len 表示这个数是[0, 1, ...., len] 比如10 __lg(10) = 3, 1010 [3, 2, 1, 0]
//__builtin_popcountll(int x) 求二进制下x中1的数量 __buitlin_ctzll(int x) 求二进制下末尾0的个数
//(n & (1 << i))的值可能会是1, 2, 4...... (n >> i) & 1的值一定是1

const int N = 2e5 + 10;
int n;
int a[N];
int dp[N];
int b[N], len_b, lis[N];
void solve() {
    cin >> n;
    for(int i = 1; i <= n; i ++ ) cin >> a[i];

    len_b = 0;
    memset(b, 0, sizeof b);memset(lis, 0, sizeof lis);   
    for(int i = 1; i <= n; i ++ ) {
        int l = 1, r = len_b;
        while(l <= r) {
            int mid = (l + r) >> 1;
            if(b[mid] > a[i]) l = mid + 1;
            else r = mid - 1;
        }
    
        lis[i] = r + 1;
        b[r + 1] = a[i];
        len_b = max(len_b, r + 1);
        //cout << lis[i] << " \n"[i == n];
    }

    vector<int> stk;
    int maxn = 0;
    for(int i = 1; i <= n; i ++ ) {
        dp[i] = dp[i - 1];

        while(!stk.empty() && a[stk.back()] < a[i]) stk.pop_back();

        if(a[i] > maxn) {
            dp[i] += i - 1;
            maxn = a[i];
        }
        else if(a[i] == maxn) {
            stk.pop_back();
        }
        else {
            dp[i] += lis[i] - 1;
            if(a[stk.back()] != a[i]) dp[i] += (i - stk.back() - 1);
        }
        stk.push_back(i);
        //cout << dp[i] << " \n"[i == n];
    }
    cout << dp[n] << endl;
}

signed main() {
    ios::sync_with_stdio(0);cin.tie(0);
    cout << fixed << setprecision(10);
    int T = 1;
    cin >> T;
    while (T -- ) solve();
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 8632kb

input:

4
2
1 2
2
2 2
7
1 1 1 2 2 2 2
3
1 2 3

output:

1
0
3
3

result:

ok 4 number(s): "1 0 3 3"

Test #2:

score: -100
Wrong Answer
time: 47ms
memory: 9816kb

input:

2
198018
875421126 585870339 471894633 383529988 625397685 944061047 704695631 105113224 459022561 760848605 980735314 847376362 980571959 329939331 644635272 326439858 752879510 837384394 175179068 182094523 397239381 1199016 185143405 279638454 252374970 822030887 860312140 137248166 993229443 164...

output:

78409477
74841025

result:

wrong answer 1st numbers differ - expected: '4084978', found: '78409477'