oj.uz

Submission #894299

# Submission time Handle Problem Language Result Execution time Memory
894299 2023-12-28T04:13:41 Z vjudge1 Index (COCI21_index) C++17
60 / 110
 841 ms 3048 KB 
#include <bits/stdc++.h>
#define ll long long
#define all(a) a.begin(), a.end()
#define F first
#define S second
#define pb push_back
#define eb emplace_back
#define ull unsigned long long
#define ld long double
#define lv v+v
#define rv v+v+1
#define files freopen("expert.in", "r", stdin), freopen("expert.out", "w", stdout)
using namespace std;
const ll mod = 1e9 + 7;
const ll N = 5e4 + 10;
const ll P = 337ll;
const ld EPS = 1e-9;
const ll block = 228;
ll n,qq,a[N],ans[N], t[200000 + 10], MAXNUM=0, MINNUM = LLONG_MAX,cur = 0,l=0,r=0;
struct ask {
    ll L, R, idx;
};
ask q[N];
bool cmp(ask x, ask y) {
    if(x.L / block == y.L / block){return x.R < y.R;}
	else {return x.L < y.L;}
}
ll sum(ll k) {
    ll s = 0;
    while (k >= MINNUM) {
    s += t[k];
    k -= k&-k;
 }
 return s;
}
void add(ll k, ll val) {
 if(k<1) {
     return;
 }
 while (k <= MAXNUM) {
 t[k] += val;
 k += k&-k;
 }
}
bool check(ll t) {
    ll num = sum(MAXNUM) - sum(t-1);
    return num>=t;
}
void del(ll i) {
    add(a[i],-1);
    ll l = 1, r = N;
    while(l + 1 < r) {
        ll mid = l + r >> 1LL;
        if(check(mid)) {
            l = mid;
        }
        else {
            r = mid;
        }
    }
    cur = l;
}
void inc(ll i) {
    add(a[i],1);
    ll l = 1, r = N;
    while(l + 1 < r) {
        ll mid = l + r >> 1LL;
        if(check(mid)) {
            l = mid;
        }
        else {
            r = mid;
        }
    }
    cur = l;
}

int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
cin>>n>>qq;
for(ll i = 1; i<=n; i++) {
    cin>>a[i];
    MAXNUM = max(MAXNUM, a[i]);
    MINNUM = min(MINNUM, a[i]);
}
for(ll i = 1; i<=qq; i++) {
    ll l,r;
    cin>>l>>r;
    q[i].L = l;
    q[i].R = r;
    q[i].idx = i;
}
sort(q+1, q+1+qq, cmp);
for(ll i = 1; i<=qq;i++) {
    while(l < q[i].L){
        del(l++);
    }
    while(l > q[i].L){
        inc(--l);
    }
    while(r < q[i].R){
        inc(++r);
    }
    while(r > q[i].R){
        del(r--);
    }
    ans[q[i].idx] = cur;
}
for(ll i = 1; i<=qq; i++) {
    cout<<ans[i]<<"\n";
}
return 0;
}
// equal, min, max, 1, random, build
/*

*/

Compilation message

index.cpp: In function 'void del(long long int)':
index.cpp:53:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   53 |         ll mid = l + r >> 1LL;
      |                  ~~^~~
index.cpp: In function 'void inc(long long int)':
index.cpp:67:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   67 |         ll mid = l + r >> 1LL;
      |                  ~~^~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 500 KB Output is correct
2 Correct 6 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 6 ms 348 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 6 ms 348 KB Output is correct
8 Correct 6 ms 348 KB Output is correct
9 Correct 6 ms 524 KB Output is correct
10 Correct 6 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 500 KB Output is correct
2 Correct 6 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 6 ms 348 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 6 ms 348 KB Output is correct
8 Correct 6 ms 348 KB Output is correct
9 Correct 6 ms 524 KB Output is correct
10 Correct 6 ms 348 KB Output is correct
11 Correct 766 ms 3044 KB Output is correct
12 Correct 809 ms 3048 KB Output is correct
13 Correct 748 ms 3044 KB Output is correct
14 Correct 745 ms 3044 KB Output is correct
15 Correct 752 ms 3044 KB Output is correct
16 Correct 841 ms 3044 KB Output is correct
17 Correct 839 ms 3044 KB Output is correct
18 Correct 835 ms 3048 KB Output is correct
19 Correct 764 ms 3044 KB Output is correct
20 Correct 754 ms 3044 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 500 KB Output is correct
2 Correct 6 ms 348 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 6 ms 348 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 6 ms 348 KB Output is correct
8 Correct 6 ms 348 KB Output is correct
9 Correct 6 ms 524 KB Output is correct
10 Correct 6 ms 348 KB Output is correct
11 Correct 766 ms 3044 KB Output is correct
12 Correct 809 ms 3048 KB Output is correct
13 Correct 748 ms 3044 KB Output is correct
14 Correct 745 ms 3044 KB Output is correct
15 Correct 752 ms 3044 KB Output is correct
16 Correct 841 ms 3044 KB Output is correct
17 Correct 839 ms 3044 KB Output is correct
18 Correct 835 ms 3048 KB Output is correct
19 Correct 764 ms 3044 KB Output is correct
20 Correct 754 ms 3044 KB Output is correct
21 Runtime error 4 ms 1368 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -