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Submission #32238

# Submission time Handle Problem Language Result Execution time Memory
32238 2017-10-05T02:55:30 Z dqhungdl Boat (APIO16_boat) C++14
31 / 100
 216 ms 22328 KB 
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> ii;
const int mod=1e9+7;
ii Seg[505];
int n,Count=0,res=0,a[505],b[505],f[505],c[1000005],tree[1000005];
int64_t sum=0;
vector<ii> V;

void Sub1()
{
    for(int i=1; i<=n; i++)
    {
        f[i]=1;
        for(int j=1; j<i; j++)
            if(a[j]<a[i])
                f[i]=(f[i]+f[j])%mod;
        res=(res+f[i])%mod;
    }
    cout<<res;
}

void Update(int idx,int data)
{
    while(idx<=sum)
    {
        tree[idx]=(tree[idx]+data)%mod;
        idx+=idx&-idx;
    }
}

int Query(int idx)
{
    int rs=0;
    while(idx>0)
    {
        rs=(rs+tree[idx])%mod;
        idx-=idx&-idx;
    }
    return rs;
}

void Sub2()
{
    int Count=0;
    for(int i=1; i<=n; i++)
        for(int j=b[i];j>=a[i];j--)
            V.push_back(ii(j,++Count));
    sort(V.begin(),V.end());
    c[V[0].second]=1;
    Count=1;
    for(int i=1;i<V.size();i++)
        if(V[i].first>V[i-1].first)
            c[V[i].second]=++Count;
        else
            c[V[i].second]=Count;
    for(int i=1; i<=sum; i++)
    {
        int tmp=(Query(c[i]-1)+1)%mod;
        Update(c[i],tmp);
        res=(res+tmp)%mod;
    }
    cout<<res;
}

int main()
{
    ios_base::sync_with_stdio(false);
    //freopen("BOAT.INP","r",stdin);
    cin>>n;
    bool check=false;
    for(int i=1; i<=n; i++)
    {
        cin>>a[i]>>b[i];
        if(a[i]!=b[i])
            check=true;
        sum+=b[i]-a[i]+1;
    }
    if(check==false)
        Sub1();
    else if(sum<=1e6)
        Sub2();
}

Compilation message

boat.cpp: In function 'void Sub2()':
boat.cpp:53:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=1;i<V.size();i++)
                  ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 10000 KB Output is correct
2 Correct 0 ms 10000 KB Output is correct
3 Correct 0 ms 10000 KB Output is correct
4 Correct 0 ms 10000 KB Output is correct
5 Correct 0 ms 10000 KB Output is correct
6 Correct 0 ms 10000 KB Output is correct
7 Correct 0 ms 10000 KB Output is correct
8 Correct 0 ms 10000 KB Output is correct
9 Correct 0 ms 10000 KB Output is correct
10 Correct 0 ms 10000 KB Output is correct
11 Correct 0 ms 10000 KB Output is correct
12 Correct 0 ms 10000 KB Output is correct
13 Correct 0 ms 10000 KB Output is correct
14 Correct 0 ms 10000 KB Output is correct
15 Correct 0 ms 10000 KB Output is correct
16 Correct 0 ms 10000 KB Output is correct
17 Correct 0 ms 10000 KB Output is correct
18 Correct 0 ms 10000 KB Output is correct
19 Correct 0 ms 10000 KB Output is correct
20 Correct 0 ms 10000 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 10000 KB Output is correct
2 Correct 0 ms 10000 KB Output is correct
3 Correct 0 ms 10000 KB Output is correct
4 Correct 0 ms 10000 KB Output is correct
5 Correct 0 ms 10000 KB Output is correct
6 Correct 0 ms 10000 KB Output is correct
7 Correct 0 ms 10000 KB Output is correct
8 Correct 0 ms 10000 KB Output is correct
9 Correct 0 ms 10000 KB Output is correct
10 Correct 0 ms 10000 KB Output is correct
11 Correct 0 ms 10000 KB Output is correct
12 Correct 0 ms 10000 KB Output is correct
13 Correct 0 ms 10000 KB Output is correct
14 Correct 0 ms 10000 KB Output is correct
15 Correct 0 ms 10000 KB Output is correct
16 Correct 0 ms 10000 KB Output is correct
17 Correct 0 ms 10000 KB Output is correct
18 Correct 0 ms 10000 KB Output is correct
19 Correct 0 ms 10000 KB Output is correct
20 Correct 0 ms 10000 KB Output is correct
21 Correct 196 ms 22328 KB Output is correct
22 Correct 196 ms 22328 KB Output is correct
23 Correct 186 ms 22328 KB Output is correct
24 Correct 189 ms 22328 KB Output is correct
25 Correct 199 ms 22328 KB Output is correct
26 Correct 209 ms 22328 KB Output is correct
27 Correct 209 ms 22328 KB Output is correct
28 Correct 209 ms 22328 KB Output is correct
29 Correct 216 ms 22328 KB Output is correct
30 Correct 209 ms 22328 KB Output is correct
31 Correct 183 ms 22328 KB Output is correct
32 Correct 186 ms 22328 KB Output is correct
33 Correct 179 ms 22328 KB Output is correct
34 Correct 193 ms 22328 KB Output is correct
35 Correct 156 ms 22328 KB Output is correct
36 Correct 163 ms 22328 KB Output is correct
37 Correct 159 ms 22328 KB Output is correct
38 Correct 149 ms 22328 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 10000 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 10000 KB Output is correct
2 Correct 0 ms 10000 KB Output is correct
3 Correct 0 ms 10000 KB Output is correct
4 Correct 0 ms 10000 KB Output is correct
5 Correct 0 ms 10000 KB Output is correct
6 Correct 0 ms 10000 KB Output is correct
7 Correct 0 ms 10000 KB Output is correct
8 Correct 0 ms 10000 KB Output is correct
9 Correct 0 ms 10000 KB Output is correct
10 Correct 0 ms 10000 KB Output is correct
11 Correct 0 ms 10000 KB Output is correct
12 Correct 0 ms 10000 KB Output is correct
13 Correct 0 ms 10000 KB Output is correct
14 Correct 0 ms 10000 KB Output is correct
15 Correct 0 ms 10000 KB Output is correct
16 Correct 0 ms 10000 KB Output is correct
17 Correct 0 ms 10000 KB Output is correct
18 Correct 0 ms 10000 KB Output is correct
19 Correct 0 ms 10000 KB Output is correct
20 Correct 0 ms 10000 KB Output is correct
21 Correct 196 ms 22328 KB Output is correct
22 Correct 196 ms 22328 KB Output is correct
23 Correct 186 ms 22328 KB Output is correct
24 Correct 189 ms 22328 KB Output is correct
25 Correct 199 ms 22328 KB Output is correct
26 Correct 209 ms 22328 KB Output is correct
27 Correct 209 ms 22328 KB Output is correct
28 Correct 209 ms 22328 KB Output is correct
29 Correct 216 ms 22328 KB Output is correct
30 Correct 209 ms 22328 KB Output is correct
31 Correct 183 ms 22328 KB Output is correct
32 Correct 186 ms 22328 KB Output is correct
33 Correct 179 ms 22328 KB Output is correct
34 Correct 193 ms 22328 KB Output is correct
35 Correct 156 ms 22328 KB Output is correct
36 Correct 163 ms 22328 KB Output is correct
37 Correct 159 ms 22328 KB Output is correct
38 Correct 149 ms 22328 KB Output is correct
39 Incorrect 0 ms 10000 KB Output isn't correct
40 Halted 0 ms 0 KB -