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Submission #124346

# Submission time Handle Problem Language Result Execution time Memory
124346 2019-07-03T06:52:35 Z Mtaylor Boat (APIO16_boat) C++14
9 / 100
 2000 ms 232416 KB 
#include <bits/stdc++.h>
 
    using namespace std;
    typedef long long ll;
    typedef vector<ll> vl ;
 
    #define mp make_pair
    #define pb push_back
    #define f first
    #define s second
    #define all(v) (v).begin(),(v).end()
 
 
    const int MOD = 1000000007;
    const int N = 1000009;
    const double PI =4*atan(1);
    const double eps = 1e-7;
    
    ll n;
    map<ll,ll> maa;
    map<ll,ll> mal;
    set<ll> ss;
    ll a[N];
    ll b[N];
    ll c[N];
    ll d[N];
    ll tree[N];
    ll tree2[N];
 
    void update(ll x, ll val){
        for(;x<=1000005;x+=(x)&(-x)){
            tree[x]+=val;
            tree[x]%=MOD;
        }
    }
 
    ll get(ll x){
        ll to_return =0;
        for(;x>0;x-=x&(-x)){
            to_return +=tree[x];
            to_return %=MOD;
        }
        return to_return;
    }
 
 
    int main(){
        ios::sync_with_stdio(0);
        //freopen("easy.txt","r",stdin);
        cin >> n;
        for(int i=0;i<n;i++){
            cin >> a[i];
            cin >> b[i];
            for(int j=a[i];j<=b[i];j++){
            	ss.insert(j);
            }
        }
        ll cnt=2;
        for(auto t:ss){
            mal[t]=cnt;
            maa[cnt]=t;
            cnt++;
        }
        update(1,1);
        ll ans=0;
        for(int i=0;i<n;i++){
            for(int j=mal[a[i]];j<=mal[b[i]];j++){
            	if(j==mal[a[i]])
                	ans+=get(j);
                else{
                	ans+=((maa[j]-maa[j-1])%MOD) * (get(j-1)+tree2[j-1])%MOD;
                }
                //cout << i << " " << maa[j] << " " << ans << endl;
                ans%=MOD;
            }
            for(int j=mal[b[i]];j>=mal[a[i]];j--){
                	ll x=get(j);
                	update(j+1,x);
                	//update2(j,x);
                	tree2[j]+=x;
                if(j!=mal[a[i]]){
                	ll x=(get(j-1)+ tree2[j-1])%MOD;
                	update(j,((x%MOD)*((maa[j]-maa[j-1]-1) % MOD))%MOD);
                }
            }
 
        }
        cout << ans;
        return 0;
    }

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 3 ms 552 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 3 ms 552 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 583 ms 1448 KB Output is correct
22 Correct 597 ms 1548 KB Output is correct
23 Correct 546 ms 1440 KB Output is correct
24 Correct 609 ms 1604 KB Output is correct
25 Correct 649 ms 1400 KB Output is correct
26 Correct 617 ms 1228 KB Output is correct
27 Correct 630 ms 1324 KB Output is correct
28 Correct 625 ms 1272 KB Output is correct
29 Correct 621 ms 1272 KB Output is correct
30 Execution timed out 2074 ms 180052 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2089 ms 232416 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 3 ms 504 KB Output is correct
4 Correct 3 ms 504 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 3 ms 552 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 504 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 3 ms 504 KB Output is correct
13 Correct 3 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 583 ms 1448 KB Output is correct
22 Correct 597 ms 1548 KB Output is correct
23 Correct 546 ms 1440 KB Output is correct
24 Correct 609 ms 1604 KB Output is correct
25 Correct 649 ms 1400 KB Output is correct
26 Correct 617 ms 1228 KB Output is correct
27 Correct 630 ms 1324 KB Output is correct
28 Correct 625 ms 1272 KB Output is correct
29 Correct 621 ms 1272 KB Output is correct
30 Execution timed out 2074 ms 180052 KB Time limit exceeded
31 Halted 0 ms 0 KB -