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Submission #475889

# Submission time Handle Problem Language Result Execution time Memory
475889 2021-09-24T10:01:45 Z Jarif_Rahman Snowball (JOI21_ho_t2) C++17
33 / 100
 2500 ms 21116 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")

const ll inf = 1e13;
struct segtree{
    const ll inf = 1e18;
    struct node{
        ll sm, mx, mn;
        node(){
            sm = 0, mx = -1e18, mn = 1e18;
        }
        node(ll x){
            sm = x, mx = x, mn = x;
        }
        node operator+(node a){
            node rt;
            rt.sm = sm+a.sm;
            rt.mx = max(mx, a.mx);
            rt.mn = min(mn, a.mn);
            return rt;
        }
    };
    int k;
    vector<node> v;
    segtree(int n){
        k = 1;
        while(k < n) k*=2;
        k*=2;
        v.resize(k, node());
    }
    void upd(int in, ll x){
        in+=k/2;
        v[in] = node(x);
        in/=2;
        while(in > 0){
            v[in] = v[2*in]+v[2*in+1];
            in/=2;
        }
    }
    int first_atleast(int nd, int a, int b, ll x){
        if(v[nd].mx < x) return -1;
        if(a == b) return a;
        int md = (a+b)/2;
        if(v[2*nd].mx < x) return first_atleast(2*nd+1, md+1, b, x);
        else return first_atleast(2*nd, a, md, x);
    }
    int first_atleast(ll x){
        return first_atleast(1, 0, k/2-1, x);
    }
    int first_atmost(int nd, int a, int b, ll x){
        if(v[nd].mn > x) return -1;
        if(a == b) return a;
        int md = (a+b)/2;
        if(v[2*nd].mn > x) return first_atmost(2*nd+1, md+1, b, x);
        else return first_atmost(2*nd, a, md, x);
    }
    int first_atmost(ll x){
        return first_atmost(1, 0, k/2-1, x);
    }
};
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, q; cin >> n >> q;
    vector<ll> v(n);
    for(ll &x: v) cin >> x;

    vector<ll> w(q);
    for(ll &x: w) cin >> x;
    vector<ll> sum(q+1);
    sum[0] = 0;
    for(int i = 0; i < q; i++) sum[i+1] = sum[i]+w[i];
    segtree seg(q+1);
    for(int i = 0; i < q+1; i++) seg.upd(i, sum[i]);

    vector<ll> ans(n, 0);

    for(int i = 0; i < n; i++){
        
        ll a = -inf, b = v[i];
        if(i != 0) a = v[i-1];
        while(a < b){
            ll md = (a+b);
            if(md >= 0) md/=2;
            else md/=2, md--;
            int x = seg.first_atmost(md-v[i]);
            if(x == -1){
                a = md+1;
                continue;
            }
            if(i != 0 && seg.first_atleast(md+1-v[i-1]) != -1 && seg.first_atleast(md+1-v[i-1]) < x){
                a = md+1;
                continue;
            }
            b = md;
        }
        ans[i]+=v[i]-a;

        a = v[i], b = inf;
        if(i != n-1) b = v[i+1];
        while(a < b){
            ll md = (a+b);
            if(md >= 0) md++, md/=2;
            else md/=2;
            int x = seg.first_atleast(md-v[i]);
            if(x == -1){
                b = md-1;
                continue;
            }
            if(i != n-1 && seg.first_atmost(md-1-v[i+1]) != -1 && seg.first_atmost(md-1-v[i+1]) < x){
                b = md-1;
                continue;
            }
            a = md;
        }
        ans[i]+=a-v[i];

    }

    for(ll x: ans) cout << x << "\n";
}

Compilation message

Main.cpp:10: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   10 | #pragma GCC optimization ("O3")
      | 
Main.cpp:11: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   11 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 3 ms 460 KB Output is correct
4 Correct 14 ms 460 KB Output is correct
5 Correct 13 ms 496 KB Output is correct
6 Correct 10 ms 508 KB Output is correct
7 Correct 9 ms 460 KB Output is correct
8 Correct 8 ms 508 KB Output is correct
9 Correct 7 ms 508 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 14 ms 520 KB Output is correct
16 Correct 13 ms 512 KB Output is correct
17 Correct 9 ms 456 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 460 KB Output is correct

Subtask #2
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 3 ms 460 KB Output is correct
4 Correct 14 ms 460 KB Output is correct
5 Correct 13 ms 496 KB Output is correct
6 Correct 10 ms 508 KB Output is correct
7 Correct 9 ms 460 KB Output is correct
8 Correct 8 ms 508 KB Output is correct
9 Correct 7 ms 508 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 14 ms 520 KB Output is correct
16 Correct 13 ms 512 KB Output is correct
17 Correct 9 ms 456 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 47 ms 16316 KB Output is correct
21 Correct 50 ms 16356 KB Output is correct
22 Correct 50 ms 16392 KB Output is correct
23 Correct 73 ms 16420 KB Output is correct
24 Correct 330 ms 16948 KB Output is correct
25 Execution timed out 2502 ms 21116 KB Time limit exceeded
26 Halted 0 ms 0 KB -