oj.uz

Submission #570235

# Submission time Handle Problem Language Result Execution time Memory
570235 2022-05-28T21:28:26 Z Joshi503 Mountains (NOI20_mountains) C++14
15 / 100
 253 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using db = long double;
using str = string;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
using pd = pair<db, db>;
#define f first
#define s second

#define tcT template<class T
#define tcTU tcT, class U
tcT> using V = vector<T>;
tcT, size_t SZ > using AR = array<T, SZ>;
using vi = V<int>;
using vb = V<bool>;
using vl = V<ll>;
using vd = V<db>;
using vs = V<str>;
using vpi = V<pi>;
using vpl = V<pl>;

#define sz(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) x.rbegin(), x.rend() 
#define sor(x) sort(all(x)) 
#define pb push_back

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = ((b)-1); i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define rep(a) F0R(_,a)
#define each(a,x) for (auto& a: x)

const ll MOD = 1e9 + 7;
const ll MX = 1e9;
const ll INF = 1e18;
const db PI = acos((db)-1);
const int ddef[4]{ 1,0,-1,0 }, dataq[4]{ 0,1,0,-1 };
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());
template<class T> using pqg = priority_queue<T, vector<T>, greater<T>>;

void setIO(string name = "") {
    ios_base::sync_with_stdio(0); cin.tie(0);
    if (sz(name)) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}

void _print(char i) { cerr << i; }
void _print(string i) { cerr << i; }
void _print(float i) { cerr << i; }
void _print(int i) { cerr << i; }
void _print(double i) { cerr << i; }
void _print() { cerr << "\n"; };
template<typename x, typename y> void _print(pair<x, y>& t) { cerr << "{";_print(t.first);cerr << ", ";_print(t.second);cerr << "},"; }
template<typename x> void _print(x& t) { cerr << "{"; for (int i = 0;i < (int)t.size();i++) { _print(t[i]); if (i < (int)t.size() - 1) cerr << ", "; } cerr << "}"; }
template<typename x, typename... y> void _print(x a, y... b) { _print(a);if (sizeof...(b)) cerr << ", ";_print(b...); }
#define dbg(x...) cerr<<"["<<#x<<"] = [";_print(x);cerr<<"]\n";

int test;

void solve() {

    ll n; cin >> n;

    vi a(n);
    each(x, a) cin >> x;
    vi b = a;
    sor(b);
    if(a == b){
        cout << "0\n";
        return;
    }
    map<ll, ll> m;
    ll cnt = 0;
    F0R(i, n){
        if(!m[b[i]]){
            m[b[i]] = cnt++;
        }
    }
    ll pref[n + 1][cnt];
    F0R(i, n){
        a[i] = m[a[i]];
    }
    F0R(i, n + 1){
        F0R(j, cnt){
            pref[i][j] = 0;
        }
    }
    for(ll i = 0; i < n; i++){
        for(ll j = 0; j < cnt; j++){
            pref[i + 1][j] = pref[i][j] + (j > a[i]);
        }
    }
    ll ans = 0;
    FOR(i, 1, n - 1){
        // cout << pref[i][a[i]] - pref[i - 1][a[i]] << " " << pref[n][a[i]] - pref[i][a[i]] << "\n";
        ans += (pref[i + 1][a[i]]) * (pref[n][a[i]] - pref[i + 1][a[i]]);
    }
    for(ll j = 0; j < cnt; j++){
        for(ll i = 0; i < n + 1; i++){
        }
    } 

    cout << ans << "\n";
 
}

int main() {
    setIO("");
    int T = 1;
    // cin >> T;
    for (test = 1; test <= T; test++) solve();
    return 0;
}

Compilation message

Mountains.cpp: In function 'void setIO(std::string)':
Mountains.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mountains.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 17 ms 9724 KB Output is correct
3 Correct 20 ms 9724 KB Output is correct
4 Correct 15 ms 9684 KB Output is correct
5 Correct 16 ms 9724 KB Output is correct
6 Correct 21 ms 9684 KB Output is correct
7 Correct 16 ms 9684 KB Output is correct
8 Correct 15 ms 9684 KB Output is correct
9 Correct 15 ms 9720 KB Output is correct
10 Correct 15 ms 9684 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 9708 KB Output is correct
2 Correct 34 ms 9704 KB Output is correct
3 Correct 42 ms 9704 KB Output is correct
4 Correct 37 ms 9584 KB Output is correct
5 Correct 29 ms 9676 KB Output is correct
6 Correct 32 ms 9704 KB Output is correct
7 Correct 32 ms 9712 KB Output is correct
8 Correct 25 ms 2644 KB Output is correct
9 Correct 28 ms 2656 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 9708 KB Output is correct
2 Correct 34 ms 9704 KB Output is correct
3 Correct 42 ms 9704 KB Output is correct
4 Correct 37 ms 9584 KB Output is correct
5 Correct 29 ms 9676 KB Output is correct
6 Correct 32 ms 9704 KB Output is correct
7 Correct 32 ms 9712 KB Output is correct
8 Correct 25 ms 2644 KB Output is correct
9 Correct 28 ms 2656 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 253 ms 239832 KB Output is correct
12 Correct 213 ms 239828 KB Output is correct
13 Correct 223 ms 239760 KB Output is correct
14 Correct 209 ms 239824 KB Output is correct
15 Correct 224 ms 239848 KB Output is correct
16 Correct 222 ms 239820 KB Output is correct
17 Correct 208 ms 239968 KB Output is correct
18 Correct 19 ms 2644 KB Output is correct
19 Correct 21 ms 2772 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 9708 KB Output is correct
2 Correct 34 ms 9704 KB Output is correct
3 Correct 42 ms 9704 KB Output is correct
4 Correct 37 ms 9584 KB Output is correct
5 Correct 29 ms 9676 KB Output is correct
6 Correct 32 ms 9704 KB Output is correct
7 Correct 32 ms 9712 KB Output is correct
8 Correct 25 ms 2644 KB Output is correct
9 Correct 28 ms 2656 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 253 ms 239832 KB Output is correct
12 Correct 213 ms 239828 KB Output is correct
13 Correct 223 ms 239760 KB Output is correct
14 Correct 209 ms 239824 KB Output is correct
15 Correct 224 ms 239848 KB Output is correct
16 Correct 222 ms 239820 KB Output is correct
17 Correct 208 ms 239968 KB Output is correct
18 Correct 19 ms 2644 KB Output is correct
19 Correct 21 ms 2772 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Runtime error 207 ms 262144 KB Execution killed with signal 9
22 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 17 ms 9724 KB Output is correct
3 Correct 20 ms 9724 KB Output is correct
4 Correct 15 ms 9684 KB Output is correct
5 Correct 16 ms 9724 KB Output is correct
6 Correct 21 ms 9684 KB Output is correct
7 Correct 16 ms 9684 KB Output is correct
8 Correct 15 ms 9684 KB Output is correct
9 Correct 15 ms 9720 KB Output is correct
10 Correct 15 ms 9684 KB Output is correct
11 Correct 34 ms 9708 KB Output is correct
12 Correct 34 ms 9704 KB Output is correct
13 Correct 42 ms 9704 KB Output is correct
14 Correct 37 ms 9584 KB Output is correct
15 Correct 29 ms 9676 KB Output is correct
16 Correct 32 ms 9704 KB Output is correct
17 Correct 32 ms 9712 KB Output is correct
18 Correct 25 ms 2644 KB Output is correct
19 Correct 28 ms 2656 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 253 ms 239832 KB Output is correct
22 Correct 213 ms 239828 KB Output is correct
23 Correct 223 ms 239760 KB Output is correct
24 Correct 209 ms 239824 KB Output is correct
25 Correct 224 ms 239848 KB Output is correct
26 Correct 222 ms 239820 KB Output is correct
27 Correct 208 ms 239968 KB Output is correct
28 Correct 19 ms 2644 KB Output is correct
29 Correct 21 ms 2772 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Incorrect 0 ms 212 KB Output isn't correct
32 Halted 0 ms 0 KB -