oj.uz

Submission #535890

# Submission time Handle Problem Language Result Execution time Memory
535890 2022-03-11T17:24:25 Z phathnv Izbori (COCI22_izbori) C++11
110 / 110
 956 ms 33620 KB 
#include <bits/stdc++.h>

#define mp make_pair
#define X first
#define Y second
#define FOR(i, a, b) for(int i = a; i <= b; i++)
#define FOD(i, a, b) for(int i = a; i >= b; i--)
#define taskname "MAJORITY"
using namespace std;

typedef long long ll;
typedef pair <int, int> ii;

const int N = 500010;

struct SegTree{
    #define mid ((l + r) >> 1)
    ll d[N * 4], lazy[N * 4], start[N * 4];
    ll calc(int l, int r){
        ll len = r - l + 1;
        return (len + 1) * len / 2;
    }
    void doLazy(int id, int l, int r){
        if (lazy[id] == 0 && start == 0)
            return;
        d[id] += lazy[id] * calc(l, r) + start[id] * (r - l + 1);
        if (l != r){
            lazy[id << 1] += lazy[id];
            lazy[id << 1 | 1] += lazy[id];
            start[id << 1] += start[id];
            start[id << 1 | 1] += start[id] + (mid + 1 - l) * lazy[id];
        }
        lazy[id] = 0;
        start[id] = 0;
    }
    void update(int id, int l, int r, int u, int v, int st, int val){
        doLazy(id, l, r);
        if (v < l || r < u)
            return;
        if (u <= l && r <= v){
            lazy[id] += val;
            start[id] += st + val * (l - u);
            doLazy(id, l, r);
            return;
        }
        update(id << 1, l, mid, u, v, st, val);
        update(id << 1 | 1, mid + 1, r, u, v, st, val);
        d[id] = d[id << 1] + d[id << 1 | 1];
    }
    ll get(int id, int l, int r, int u, int v){
        doLazy(id, l, r);
        if (v < l || r < u)
            return 0;
        if (u <= l && r <= v)
            return d[id];
        return get(id << 1, l, mid, u, v) + get(id << 1 | 1, mid + 1, r, u, v);
    }
    #undef mid
} ST;

int n, a[N];
vector <int> pos[N];

void readInput(){
    cin >> n;
    FOR(i, 1, n)
        pos[i].push_back(0);
  	vector<int> a(n);
  	for (int &x : a) {
      	cin >> x;
    }
  	auto b = a;
  	sort(b.begin(), b.end());
  	for (int i = 1; i <= n; ++i) {
      	int x = lower_bound(b.begin(), b.end(), a[i - 1]) - b.begin() + 1;
      	pos[x].push_back(i);
    }
    FOR(i, 1, n)
        pos[i].push_back(n + 1);

}

void solve(){
    ll ans = 0;
    FOR(i, 1, n){
        FOR(j, 0, pos[i].size() - 2){
            int r = j * 2 - pos[i][j];
            int l = r - (pos[i][j + 1] - pos[i][j] - 1);
            ans += ST.get(1, 0, 2 * n, l - 1 + n, r - 1 + n);
            ST.update(1, 0, 2 * n, l + n, r + n, 0, 1);
            ST.update(1, 0, 2 * n, r + n + 1, n * 2, (r - l + 1), 0);
        }
        FOR(j, 0, pos[i].size() - 2){
            int r = j * 2 - pos[i][j];
            int l = r - (pos[i][j + 1] - pos[i][j] - 1);
            ST.update(1, 0, 2 * n, l + n, r + n, 0, -1);
            ST.update(1, 0, 2 * n, r + n + 1, n * 2, -(r - l + 1), 0);
        }
    }
    cout << ans;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    readInput();
    solve();
    return 0;
}

Compilation message

Main.cpp: In function 'void readInput()':
Main.cpp:6:22: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    6 | #define FOR(i, a, b) for(int i = a; i <= b; i++)
      |                      ^~~
Main.cpp:66:5: note: in expansion of macro 'FOR'
   66 |     FOR(i, 1, n)
      |     ^~~
Main.cpp:68:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   68 |    vector<int> a(n);
      |    ^~~~~~
Main.cpp: In function 'void solve()':
Main.cpp:6:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define FOR(i, a, b) for(int i = a; i <= b; i++)
......
   86 |         FOR(j, 0, pos[i].size() - 2){
      |             ~~~~~~~~~~~~~~~~~~~~~~~    
Main.cpp:86:9: note: in expansion of macro 'FOR'
   86 |         FOR(j, 0, pos[i].size() - 2){
      |         ^~~
Main.cpp:6:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define FOR(i, a, b) for(int i = a; i <= b; i++)
......
   93 |         FOR(j, 0, pos[i].size() - 2){
      |             ~~~~~~~~~~~~~~~~~~~~~~~    
Main.cpp:93:9: note: in expansion of macro 'FOR'
   93 |         FOR(j, 0, pos[i].size() - 2){
      |         ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 7 ms 12076 KB Output is correct
3 Correct 7 ms 12100 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12076 KB Output is correct
6 Correct 7 ms 12164 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 7 ms 12076 KB Output is correct
3 Correct 7 ms 12100 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12076 KB Output is correct
6 Correct 7 ms 12164 KB Output is correct
7 Correct 11 ms 12204 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 11 ms 12340 KB Output is correct
10 Correct 11 ms 12244 KB Output is correct
11 Correct 10 ms 12304 KB Output is correct
12 Correct 10 ms 12244 KB Output is correct
13 Correct 10 ms 12284 KB Output is correct
14 Correct 10 ms 12244 KB Output is correct
15 Correct 11 ms 12244 KB Output is correct
16 Correct 12 ms 12228 KB Output is correct
17 Correct 10 ms 12316 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 292 ms 18192 KB Output is correct
2 Correct 411 ms 19736 KB Output is correct
3 Correct 192 ms 16552 KB Output is correct
4 Correct 381 ms 20112 KB Output is correct
5 Correct 429 ms 20448 KB Output is correct
6 Correct 412 ms 20736 KB Output is correct
7 Correct 431 ms 20720 KB Output is correct
8 Correct 397 ms 20752 KB Output is correct
9 Correct 429 ms 20840 KB Output is correct
10 Correct 399 ms 20840 KB Output is correct
11 Correct 426 ms 31644 KB Output is correct

Subtask #4
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 7 ms 12076 KB Output is correct
3 Correct 7 ms 12100 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct
5 Correct 9 ms 12076 KB Output is correct
6 Correct 7 ms 12164 KB Output is correct
7 Correct 11 ms 12204 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 11 ms 12340 KB Output is correct
10 Correct 11 ms 12244 KB Output is correct
11 Correct 10 ms 12304 KB Output is correct
12 Correct 10 ms 12244 KB Output is correct
13 Correct 10 ms 12284 KB Output is correct
14 Correct 10 ms 12244 KB Output is correct
15 Correct 11 ms 12244 KB Output is correct
16 Correct 12 ms 12228 KB Output is correct
17 Correct 10 ms 12316 KB Output is correct
18 Correct 292 ms 18192 KB Output is correct
19 Correct 411 ms 19736 KB Output is correct
20 Correct 192 ms 16552 KB Output is correct
21 Correct 381 ms 20112 KB Output is correct
22 Correct 429 ms 20448 KB Output is correct
23 Correct 412 ms 20736 KB Output is correct
24 Correct 431 ms 20720 KB Output is correct
25 Correct 397 ms 20752 KB Output is correct
26 Correct 429 ms 20840 KB Output is correct
27 Correct 399 ms 20840 KB Output is correct
28 Correct 426 ms 31644 KB Output is correct
29 Correct 483 ms 33620 KB Output is correct
30 Correct 165 ms 16700 KB Output is correct
31 Correct 343 ms 21228 KB Output is correct
32 Correct 956 ms 32320 KB Output is correct
33 Correct 349 ms 21568 KB Output is correct
34 Correct 464 ms 21676 KB Output is correct
35 Correct 230 ms 17376 KB Output is correct
36 Correct 173 ms 16516 KB Output is correct
37 Correct 167 ms 16784 KB Output is correct
38 Correct 560 ms 27412 KB Output is correct
39 Correct 472 ms 27208 KB Output is correct
40 Correct 440 ms 27376 KB Output is correct
41 Correct 591 ms 27276 KB Output is correct
42 Correct 498 ms 27396 KB Output is correct
43 Correct 585 ms 31844 KB Output is correct
44 Correct 483 ms 32056 KB Output is correct
45 Correct 527 ms 31884 KB Output is correct
46 Correct 469 ms 31932 KB Output is correct
47 Correct 519 ms 31892 KB Output is correct
48 Correct 691 ms 32504 KB Output is correct
49 Correct 611 ms 32468 KB Output is correct
50 Correct 603 ms 32664 KB Output is correct
51 Correct 667 ms 32644 KB Output is correct
52 Correct 621 ms 32416 KB Output is correct
53 Correct 657 ms 32296 KB Output is correct
54 Correct 555 ms 32304 KB Output is correct