답안 #252726

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
252726	2020-07-26T07:50:14 Z	ne4eHbKa	Vudu (COCI15_vudu)	C++17	140 / 140	287 ms	15992 KB

vudu

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

//#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,-O3")

#define fr(i, n) for(int i = 0; i < n; ++i)
#define fo(n) fr(i, n)

#define re return
#define ef else if
#define ifn(x) if(!(x))
#define _  << ' ' <<

#define ft first
#define sd second
#define ve vector
#define pb push_back
#define eb emplace_back

#define sz(x) int((x).size())
#define bnd(x) x.begin(), x.end()
#define clr(x, y) memset((x), (y), sizeof (x))

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef ve<int> vi;

inline ll time() {re chrono :: system_clock().now().time_since_epoch().count();}
mt19937 rnd(time());
mt19937_64 RND(time());

template<typename t> inline void umin(t &a, t b) {a = min(a, b);}
template<typename t> inline void umax(t &a, t b) {a = max(a, b);}

int md = 998244353;

inline int m_add(int&a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;}
inline int m_sum(int a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;}
inline int m_mul(int&a, int b) {re a = 1ll * a * b % md;}
inline int m_prod(int a, int b) {re 1ll * a * b % md;}

int m_bpow(ll A, ll b) {
    int a = A % md;
    ll ans = 1;
    for(ll p = 1ll << 63 - __builtin_clzll(b); p; p >>= 1) {
        (ans *= ans) %= md;
        if(p & b)
            (ans *= a) %= md;
    }
    re ans;
}

//const ld pi = arg(complex<ld>(-1, 0));
//const ld pi2 = pi + pi;
const int oo = 2e9;
const ll OO = 4e18;
//} </defines>
const int N = 1e6 + 5;

ll a[N];
int f[N], c[N];

void solve() {
    int n; cin >> n; fo(n) cin >> a[i + 1]; int p; cin >> p; ++n; int m = 0; *a = 0;
    for(int i = 1; i < n; ++i) a[i] += a[i - 1] - p;
    iota(c, c + n, 0); sort(c, c + n, [&] (const int &fi, const int &se) {re a[fi] < a[se];});
    ll pr = a[*c];
    fo(n) {
        ll &j = a[c[i]];
        if(j > pr) {
            pr = j;
            ++m;
        }
        j = m;
    }
    ++m;
    clr(f, 0);
    ll ans = 0;
    fo(n) {
        for(int j = a[i] + 1; j; j -= j & -j) ans += f[j];
        for(int j = a[i] + 1; j <= m; j += j & -j) f[j]++;
    }
    cout << ans << endl;
}

int main() {
#ifdef _LOCAL
    freopen("in.txt", "r", stdin);
    int tests; cin >> tests;
    for(int test = 1; test <= tests; ++test) {
		cerr << "case #" << test << endl;
        solve();
        cerr << endl;
    }
#else
//    freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);
    ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
    solve();
#endif
    return 0;
}

Compilation message

vudu.cpp: In function 'int m_bpow(ll, ll)':
vudu.cpp:50:26: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
     for(ll p = 1ll << 63 - __builtin_clzll(b); p; p >>= 1) {
                       ~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1

140.0 / 140.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4352 KB	Output is correct
2	Correct	3 ms	4352 KB	Output is correct
3	Correct	3 ms	4352 KB	Output is correct
4	Correct	277 ms	15608 KB	Output is correct
5	Correct	154 ms	10616 KB	Output is correct
6	Correct	248 ms	14252 KB	Output is correct
7	Correct	268 ms	14768 KB	Output is correct
8	Correct	218 ms	13304 KB	Output is correct
9	Correct	287 ms	15992 KB	Output is correct
10	Correct	246 ms	14456 KB	Output is correct