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Submission #730753

# Submission time Handle Problem Language Result Execution time Memory
730753 2023-04-26T11:03:30 Z bgnbvnbv Boat (APIO16_boat) C++14
31 / 100
 396 ms 524288 KB 
#include<bits/stdc++.h>

using namespace std;
#define int long long
const int mod=(int)1e9+7;
const int maxn=505;
int sz,a[maxn],b[maxn];
vector<int>v,s;
int bit[1000005];
void update(int pos,int val)
{
    while(pos<=sz)
    {
        bit[pos]+=val;
        if(bit[pos]>=mod) bit[pos]-=mod;
        pos+=pos&(-pos);
    }
}
int get(int pos)
{
    int ans=0;
    while(pos>0)
    {
        ans+=bit[pos];
        if(ans>=mod) ans-=mod;
        pos-=(pos&(-pos));
    }
    return ans;
}
int n;
signed main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cin >> a[i] >> b[i];
        for(int j=a[i];j<=b[i];j++) v.push_back(j);
    }
    sort(v.begin(),v.end());
    s.push_back(-1);
    s.push_back(0);
    for(int i=0;i<v.size();i++)
    {
        if(i==0||v[i]!=v[i-1]) s.push_back(v[i]);
    }
    swap(v,s);
    sz=v.size()-1;
    update(1,1);
    for(int i=1;i<=n;i++)
    {
        int l=lower_bound(v.begin(),v.end(),a[i])-v.begin();
        int r=lower_bound(v.begin(),v.end(),b[i])-v.begin();
        for(int j=r;j>=l;j--)
        {
            update(j,get(j-1));
        }
    }
    cout << (get(sz)-1+mod)%mod;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:43:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for(int i=0;i<v.size();i++)
      |                 ~^~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 352 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 352 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 52 ms 8648 KB Output is correct
22 Correct 51 ms 8648 KB Output is correct
23 Correct 48 ms 8648 KB Output is correct
24 Correct 55 ms 8648 KB Output is correct
25 Correct 54 ms 8644 KB Output is correct
26 Correct 56 ms 8644 KB Output is correct
27 Correct 56 ms 8776 KB Output is correct
28 Correct 55 ms 8648 KB Output is correct
29 Correct 56 ms 8644 KB Output is correct
30 Correct 85 ms 23712 KB Output is correct
31 Correct 99 ms 23200 KB Output is correct
32 Correct 85 ms 23656 KB Output is correct
33 Correct 86 ms 23000 KB Output is correct
34 Correct 84 ms 23200 KB Output is correct
35 Correct 92 ms 22176 KB Output is correct
36 Correct 94 ms 22972 KB Output is correct
37 Correct 94 ms 23172 KB Output is correct
38 Correct 94 ms 22420 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 396 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 352 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 52 ms 8648 KB Output is correct
22 Correct 51 ms 8648 KB Output is correct
23 Correct 48 ms 8648 KB Output is correct
24 Correct 55 ms 8648 KB Output is correct
25 Correct 54 ms 8644 KB Output is correct
26 Correct 56 ms 8644 KB Output is correct
27 Correct 56 ms 8776 KB Output is correct
28 Correct 55 ms 8648 KB Output is correct
29 Correct 56 ms 8644 KB Output is correct
30 Correct 85 ms 23712 KB Output is correct
31 Correct 99 ms 23200 KB Output is correct
32 Correct 85 ms 23656 KB Output is correct
33 Correct 86 ms 23000 KB Output is correct
34 Correct 84 ms 23200 KB Output is correct
35 Correct 92 ms 22176 KB Output is correct
36 Correct 94 ms 22972 KB Output is correct
37 Correct 94 ms 23172 KB Output is correct
38 Correct 94 ms 22420 KB Output is correct
39 Runtime error 396 ms 524288 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -