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Submission #400526

# Submission time Handle Problem Language Result Execution time Memory
400526 2021-05-08T09:03:22 Z A_D Boat (APIO16_boat) C++14
31 / 100
 2000 ms 347172 KB 
#include <bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define F first
#define S second
#define du long double
using namespace std;
const int N=1e3+1;
const int M=1e6+100;
const int MOD=1e9+7;
int a[N];
int b[N];
map<int,int> mp;
set<int> st;
int seg[4*M];
void update(int p,int s,int e,int i,int v)
{
    if(s==e){
        seg[p]+=v;
        seg[p]%=MOD;
        return;
    }
    int mid=(s+e)/2;
    if(i<=mid){
        update(p*2,s,mid,i,v);
    }
    else{
        update(p*2+1,mid+1,e,i,v);
    }
    seg[p]=(seg[p*2]+seg[p*2+1])%MOD;
}
int get(int p,int s,int e,int a,int b)
{
    if(a<=s&&e<=b){
        return seg[p];
    }
    if(s>b||e<a){
        return 0;
    }
    int mid=(s+e)/2;
    return (get(p*2,s,mid,a,b)+get(p*2+1,mid+1,e,a,b))%MOD;
}
void solve()
{
    int n,ans=0,mn=1e9;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i]>>b[i];
        for(int j=a[i];j<=b[i];j++){
            st.insert(j);
        }
    }
    int cnt=2;
    for(auto x:st)mp[x]=cnt++;
    for(int i=1;i<=n;i++){
        a[i]=mp[a[i]];
        b[i]=mp[b[i]];
        for(int j=b[i];j>=a[i];j--){
            int v=get(1,1,M,1,j-1)+1;
            ans+=v;
            ans%=MOD;
            update(1,1,M,j,v);
        }
    }
    cout<<ans<<endl;
}
main()
{
    int t=1;
//    cin>>t;
    while(t--)solve();
}

Compilation message

boat.cpp: In function 'void solve()':
boat.cpp:45:17: warning: unused variable 'mn' [-Wunused-variable]
   45 |     int n,ans=0,mn=1e9;
      |                 ^~
boat.cpp: At global scope:
boat.cpp:67:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main()
      |      ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 2 ms 440 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 312 KB Output is correct
20 Correct 2 ms 332 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 2 ms 440 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 312 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 461 ms 1016 KB Output is correct
22 Correct 457 ms 1016 KB Output is correct
23 Correct 427 ms 1020 KB Output is correct
24 Correct 471 ms 1056 KB Output is correct
25 Correct 478 ms 1068 KB Output is correct
26 Correct 499 ms 844 KB Output is correct
27 Correct 499 ms 964 KB Output is correct
28 Correct 508 ms 852 KB Output is correct
29 Correct 501 ms 836 KB Output is correct
30 Correct 1100 ms 124800 KB Output is correct
31 Correct 1063 ms 122716 KB Output is correct
32 Correct 1085 ms 124924 KB Output is correct
33 Correct 1039 ms 121724 KB Output is correct
34 Correct 1119 ms 122796 KB Output is correct
35 Correct 972 ms 117224 KB Output is correct
36 Correct 1000 ms 121300 KB Output is correct
37 Correct 1027 ms 122692 KB Output is correct
38 Correct 993 ms 118724 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2099 ms 347172 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 2 ms 440 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 2 ms 336 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 312 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 461 ms 1016 KB Output is correct
22 Correct 457 ms 1016 KB Output is correct
23 Correct 427 ms 1020 KB Output is correct
24 Correct 471 ms 1056 KB Output is correct
25 Correct 478 ms 1068 KB Output is correct
26 Correct 499 ms 844 KB Output is correct
27 Correct 499 ms 964 KB Output is correct
28 Correct 508 ms 852 KB Output is correct
29 Correct 501 ms 836 KB Output is correct
30 Correct 1100 ms 124800 KB Output is correct
31 Correct 1063 ms 122716 KB Output is correct
32 Correct 1085 ms 124924 KB Output is correct
33 Correct 1039 ms 121724 KB Output is correct
34 Correct 1119 ms 122796 KB Output is correct
35 Correct 972 ms 117224 KB Output is correct
36 Correct 1000 ms 121300 KB Output is correct
37 Correct 1027 ms 122692 KB Output is correct
38 Correct 993 ms 118724 KB Output is correct
39 Execution timed out 2099 ms 347172 KB Time limit exceeded
40 Halted 0 ms 0 KB -