oj.uz

Submission #901536

# Submission time Handle Problem Language Result Execution time Memory
901536 2024-01-09T14:13:35 Z VinhLuu Art Exhibition (JOI18_art) C++17
100 / 100
 203 ms 46164 KB 
// happy

//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>
#define int long long
//#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;

typedef pair<int,int> pii;
typedef tuple<int,int,int> tp;
const int N = 1e6 + 5;
const int oo = 1e16;
const int mod = 1e9 + 7;
const int base = 29; // >= so pt pb max

int n, a[N], b[N], sum, s[N], st[N << 2], ans;

pii p[N];

void update(int i,int x){
    i += n - 1;
    st[i] = max(st[i], x);
    while(i > 1){
        i /= 2;
        st[i] = max(st[i], x);
    }
}

int get(int l,int r){
    r++;
    int ret = -oo;
    for(l += n - 1, r += n - 1; l < r; l /= 2, r /= 2){
        if(l & 1) ret = max(ret, st[l ++]);
            if(r & 1) ret = max(ret, st[-- r]);
    }
    return ret;
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #define task "v"
    if(fopen(task ".inp","r")){
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }

    cin >> n;
    for(int i = 1; i <= n; i ++){
        cin >> a[i] >> b[i];
        p[i] = {a[i], b[i]};
    }
    sort(p + 1, p + n + 1);
    update(1, 0 + p[1].fi);
    for(int i = 1; i <= n; i ++){
        s[i] = s[i - 1] + p[i].se;

        int u = get(1, i) - p[i].fi + s[i];
//        cout << p[i].fi << " " << p[i].se << " h\n";
//        cout << u << " " << i << " " << -s[i]+p[i + 1].fi << " " << get(1, i) << " " << s[i] << " " << " g\n";
        ans = max(ans, u);
        if(i + 1 <= n) update(i + 1, -s[i]+p[i + 1].fi);
    }

    cout << ans;

}

Compilation message

art.cpp: In function 'int main()':
art.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
art.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(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4456 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4560 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4456 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4560 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4440 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4456 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4560 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4440 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 2 ms 4696 KB Output is correct
28 Correct 3 ms 4700 KB Output is correct
29 Correct 2 ms 4700 KB Output is correct
30 Correct 2 ms 4700 KB Output is correct
31 Correct 2 ms 4700 KB Output is correct
32 Correct 2 ms 4700 KB Output is correct
33 Correct 2 ms 4700 KB Output is correct
34 Correct 2 ms 4700 KB Output is correct
35 Correct 2 ms 4700 KB Output is correct
36 Correct 2 ms 4700 KB Output is correct
37 Correct 2 ms 4700 KB Output is correct
38 Correct 2 ms 4700 KB Output is correct
39 Correct 2 ms 4700 KB Output is correct
40 Correct 2 ms 4700 KB Output is correct
41 Correct 2 ms 4700 KB Output is correct
42 Correct 2 ms 4700 KB Output is correct
43 Correct 2 ms 4700 KB Output is correct
44 Correct 2 ms 4700 KB Output is correct
45 Correct 2 ms 4700 KB Output is correct
46 Correct 2 ms 4700 KB Output is correct
47 Correct 2 ms 4700 KB Output is correct
48 Correct 2 ms 4700 KB Output is correct
49 Correct 2 ms 4700 KB Output is correct
50 Correct 2 ms 4700 KB Output is correct
51 Correct 2 ms 4700 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4456 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4560 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4440 KB Output is correct
24 Correct 1 ms 4440 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 2 ms 4696 KB Output is correct
28 Correct 3 ms 4700 KB Output is correct
29 Correct 2 ms 4700 KB Output is correct
30 Correct 2 ms 4700 KB Output is correct
31 Correct 2 ms 4700 KB Output is correct
32 Correct 2 ms 4700 KB Output is correct
33 Correct 2 ms 4700 KB Output is correct
34 Correct 2 ms 4700 KB Output is correct
35 Correct 2 ms 4700 KB Output is correct
36 Correct 2 ms 4700 KB Output is correct
37 Correct 2 ms 4700 KB Output is correct
38 Correct 2 ms 4700 KB Output is correct
39 Correct 2 ms 4700 KB Output is correct
40 Correct 2 ms 4700 KB Output is correct
41 Correct 2 ms 4700 KB Output is correct
42 Correct 2 ms 4700 KB Output is correct
43 Correct 2 ms 4700 KB Output is correct
44 Correct 2 ms 4700 KB Output is correct
45 Correct 2 ms 4700 KB Output is correct
46 Correct 2 ms 4700 KB Output is correct
47 Correct 2 ms 4700 KB Output is correct
48 Correct 2 ms 4700 KB Output is correct
49 Correct 2 ms 4700 KB Output is correct
50 Correct 2 ms 4700 KB Output is correct
51 Correct 2 ms 4700 KB Output is correct
52 Correct 175 ms 40784 KB Output is correct
53 Correct 186 ms 45908 KB Output is correct
54 Correct 179 ms 45984 KB Output is correct
55 Correct 177 ms 45964 KB Output is correct
56 Correct 175 ms 46164 KB Output is correct
57 Correct 185 ms 46092 KB Output is correct
58 Correct 174 ms 45956 KB Output is correct
59 Correct 176 ms 45968 KB Output is correct
60 Correct 187 ms 46080 KB Output is correct
61 Correct 185 ms 45924 KB Output is correct
62 Correct 203 ms 45976 KB Output is correct
63 Correct 181 ms 45904 KB Output is correct
64 Correct 181 ms 45904 KB Output is correct
65 Correct 194 ms 45352 KB Output is correct
66 Correct 185 ms 46024 KB Output is correct
67 Correct 185 ms 46040 KB Output is correct
68 Correct 183 ms 44780 KB Output is correct