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Submission #293524

# Submission time Handle Problem Language Result Execution time Memory
293524 2020-09-08T07:18:10 Z crossing0ver Exercise Deadlines (CCO20_day1problem2) C++17
25 / 25
 235 ms 8340 KB 
#include<bits/stdc++.h>
#define vi vector<int>
#define pii pair<int,int>
#define fi first
#define se second
#define pb push_back
using namespace std;
const int N = 2e5+5;
int MX[4*N],sum[4*N];
vector<int> v,v1;
void build(int v,int tl,int tr) {
    if (tl == tr) {
        MX[v] = v1[tl];
        sum[v] = 1;
        return;
    }
    int tm = (tl + tr)/2;
    build(v*2,tl,tm);
    build(v*2+1,tm+1,tr);
    sum[v] = sum[v*2] + sum[v*2+1];
    MX[v] = max(MX[v*2],MX[v*2+1]);
}

long long  ans;
int idx;
void upd(int v,int tl,int tr,int val) {
    if (tl == tr) {
        sum[v] = 0;
        MX[v] = -1;
        idx = tl;
        return;
    }
    int tm = (tl + tr)/2;
    if (MX[v*2+1] >= val) {
        upd(v*2+1,tm+1,tr,val);
    }else
        upd(v*2,tl,tm,val);
    sum[v] = sum[v*2] + sum[v*2+1];
    MX[v] = max(MX[v*2],MX[v*2+1]);
}
int get(int v,int tl,int tr,int pos) {
    if (pos > tr) return 0;
    if (pos <= tl) return sum[v];
    int tm = (tl + tr)/2;
    return get(v*2,tl,tm,pos) +
        get(v*2+1,tm+1,tr,pos);

}
main() {
    int n;
    cin >> n;
    v.resize(n);
    for (int i = 0; i < n; i++) {
        cin >> v[i];
        --v[i];
    }
    vi g = v;
    v1 = v;
    sort(g.begin(),g.end());

    // INVALID
    for (int i = 0; i < n; i++)
    if (g[i] < i) {
        cout <<-1;
        return 0;
    }//
    build(1,0,n-1);

    for (int i = n-1; i >= 0; i--) {
        upd(1,0,n-1,i);
        ans += get(1,0,n-1,idx);


    }
    cout << ans;
    return 0;
}

Compilation message

Main.cpp:49:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main() {
      |      ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 4 ms 512 KB Output is correct
3 Correct 4 ms 512 KB Output is correct
4 Correct 4 ms 512 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 4 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 4 ms 512 KB Output is correct
11 Correct 5 ms 640 KB Output is correct
12 Correct 5 ms 512 KB Output is correct
13 Correct 5 ms 512 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 4 ms 512 KB Output is correct
17 Correct 4 ms 512 KB Output is correct
18 Correct 5 ms 640 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 5 ms 512 KB Output is correct
21 Correct 4 ms 512 KB Output is correct
22 Correct 4 ms 512 KB Output is correct
23 Correct 4 ms 512 KB Output is correct
24 Correct 4 ms 512 KB Output is correct
25 Correct 4 ms 512 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 4 ms 512 KB Output is correct
28 Correct 6 ms 512 KB Output is correct
29 Correct 5 ms 512 KB Output is correct
30 Correct 4 ms 512 KB Output is correct
31 Correct 3 ms 384 KB Output is correct
32 Correct 4 ms 512 KB Output is correct
33 Correct 4 ms 512 KB Output is correct
34 Correct 4 ms 512 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 4 ms 512 KB Output is correct
37 Correct 4 ms 512 KB Output is correct
38 Correct 4 ms 512 KB Output is correct
39 Correct 4 ms 548 KB Output is correct
40 Correct 4 ms 640 KB Output is correct
41 Correct 3 ms 384 KB Output is correct
42 Correct 4 ms 512 KB Output is correct
43 Correct 4 ms 384 KB Output is correct
44 Correct 1 ms 384 KB Output is correct
45 Correct 1 ms 256 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 4 ms 512 KB Output is correct
3 Correct 4 ms 512 KB Output is correct
4 Correct 4 ms 512 KB Output is correct
5 Correct 4 ms 512 KB Output is correct
6 Correct 4 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 4 ms 512 KB Output is correct
11 Correct 5 ms 640 KB Output is correct
12 Correct 5 ms 512 KB Output is correct
13 Correct 5 ms 512 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 4 ms 512 KB Output is correct
17 Correct 4 ms 512 KB Output is correct
18 Correct 5 ms 640 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 5 ms 512 KB Output is correct
21 Correct 4 ms 512 KB Output is correct
22 Correct 4 ms 512 KB Output is correct
23 Correct 4 ms 512 KB Output is correct
24 Correct 4 ms 512 KB Output is correct
25 Correct 4 ms 512 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 4 ms 512 KB Output is correct
28 Correct 6 ms 512 KB Output is correct
29 Correct 5 ms 512 KB Output is correct
30 Correct 4 ms 512 KB Output is correct
31 Correct 3 ms 384 KB Output is correct
32 Correct 4 ms 512 KB Output is correct
33 Correct 4 ms 512 KB Output is correct
34 Correct 4 ms 512 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 4 ms 512 KB Output is correct
37 Correct 4 ms 512 KB Output is correct
38 Correct 4 ms 512 KB Output is correct
39 Correct 4 ms 548 KB Output is correct
40 Correct 4 ms 640 KB Output is correct
41 Correct 3 ms 384 KB Output is correct
42 Correct 4 ms 512 KB Output is correct
43 Correct 4 ms 384 KB Output is correct
44 Correct 1 ms 384 KB Output is correct
45 Correct 1 ms 256 KB Output is correct
46 Correct 220 ms 7108 KB Output is correct
47 Correct 212 ms 8184 KB Output is correct
48 Correct 194 ms 8312 KB Output is correct
49 Correct 192 ms 8184 KB Output is correct
50 Correct 203 ms 8184 KB Output is correct
51 Correct 203 ms 8312 KB Output is correct
52 Correct 223 ms 8184 KB Output is correct
53 Correct 226 ms 8056 KB Output is correct
54 Correct 205 ms 8312 KB Output is correct
55 Correct 185 ms 8232 KB Output is correct
56 Correct 207 ms 8056 KB Output is correct
57 Correct 210 ms 8184 KB Output is correct
58 Correct 230 ms 8056 KB Output is correct
59 Correct 225 ms 8184 KB Output is correct
60 Correct 227 ms 8060 KB Output is correct
61 Correct 201 ms 8124 KB Output is correct
62 Correct 191 ms 8196 KB Output is correct
63 Correct 208 ms 8108 KB Output is correct
64 Correct 227 ms 8056 KB Output is correct
65 Correct 235 ms 8184 KB Output is correct
66 Correct 210 ms 8056 KB Output is correct
67 Correct 199 ms 8184 KB Output is correct
68 Correct 211 ms 8060 KB Output is correct
69 Correct 222 ms 8184 KB Output is correct
70 Correct 223 ms 8136 KB Output is correct
71 Correct 215 ms 8056 KB Output is correct
72 Correct 212 ms 8184 KB Output is correct
73 Correct 205 ms 8184 KB Output is correct
74 Correct 188 ms 8056 KB Output is correct
75 Correct 211 ms 8056 KB Output is correct
76 Correct 139 ms 3960 KB Output is correct
77 Correct 183 ms 8312 KB Output is correct
78 Correct 183 ms 8056 KB Output is correct
79 Correct 181 ms 8188 KB Output is correct
80 Correct 139 ms 3960 KB Output is correct
81 Correct 185 ms 8336 KB Output is correct
82 Correct 181 ms 8184 KB Output is correct
83 Correct 187 ms 8184 KB Output is correct
84 Correct 218 ms 8056 KB Output is correct
85 Correct 212 ms 8056 KB Output is correct
86 Correct 212 ms 8312 KB Output is correct
87 Correct 144 ms 3996 KB Output is correct
88 Correct 216 ms 8340 KB Output is correct