| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 124349 | 2019-07-03T06:59:13 Z | Mtaylor | Boat (APIO16_boat) | C++14 | 2000 ms | 232368 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 = 2000009;
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<=2000009;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++){
scanf("%lld",&a[i]);
scanf("%lld",&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++;
}
ss.clear();
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;
}
Compilation message
| # | 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 | 504 KB | Output is correct |
| 6 | Correct | 3 ms | 504 KB | Output is correct |
| 7 | Correct | 3 ms | 504 KB | Output is correct |
| 8 | Correct | 3 ms | 424 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 | 632 KB | Output is correct |
| 13 | Correct | 3 ms | 504 KB | Output is correct |
| 14 | Correct | 3 ms | 508 KB | Output is correct |
| 15 | Correct | 3 ms | 504 KB | Output is correct |
| 16 | Correct | 2 ms | 376 KB | Output is correct |
| 17 | Correct | 2 ms | 376 KB | Output is correct |
| 18 | Correct | 2 ms | 376 KB | Output is correct |
| 19 | Correct | 2 ms | 376 KB | Output is correct |
| 20 | Correct | 3 ms | 376 KB | Output is correct |
| # | 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 | 504 KB | Output is correct |
| 6 | Correct | 3 ms | 504 KB | Output is correct |
| 7 | Correct | 3 ms | 504 KB | Output is correct |
| 8 | Correct | 3 ms | 424 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 | 632 KB | Output is correct |
| 13 | Correct | 3 ms | 504 KB | Output is correct |
| 14 | Correct | 3 ms | 508 KB | Output is correct |
| 15 | Correct | 3 ms | 504 KB | Output is correct |
| 16 | Correct | 2 ms | 376 KB | Output is correct |
| 17 | Correct | 2 ms | 376 KB | Output is correct |
| 18 | Correct | 2 ms | 376 KB | Output is correct |
| 19 | Correct | 2 ms | 376 KB | Output is correct |
| 20 | Correct | 3 ms | 376 KB | Output is correct |
| 21 | Correct | 608 ms | 1416 KB | Output is correct |
| 22 | Correct | 605 ms | 1412 KB | Output is correct |
| 23 | Correct | 583 ms | 1420 KB | Output is correct |
| 24 | Correct | 628 ms | 1528 KB | Output is correct |
| 25 | Correct | 629 ms | 1416 KB | Output is correct |
| 26 | Correct | 631 ms | 1172 KB | Output is correct |
| 27 | Correct | 636 ms | 1204 KB | Output is correct |
| 28 | Correct | 644 ms | 1168 KB | Output is correct |
| 29 | Correct | 666 ms | 1168 KB | Output is correct |
| 30 | Execution timed out | 2077 ms | 179876 KB | Time limit exceeded |
| 31 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Execution timed out | 2069 ms | 232368 KB | Time limit exceeded |
| 2 | Halted | 0 ms | 0 KB | - |
| # | 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 | 504 KB | Output is correct |
| 6 | Correct | 3 ms | 504 KB | Output is correct |
| 7 | Correct | 3 ms | 504 KB | Output is correct |
| 8 | Correct | 3 ms | 424 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 | 632 KB | Output is correct |
| 13 | Correct | 3 ms | 504 KB | Output is correct |
| 14 | Correct | 3 ms | 508 KB | Output is correct |
| 15 | Correct | 3 ms | 504 KB | Output is correct |
| 16 | Correct | 2 ms | 376 KB | Output is correct |
| 17 | Correct | 2 ms | 376 KB | Output is correct |
| 18 | Correct | 2 ms | 376 KB | Output is correct |
| 19 | Correct | 2 ms | 376 KB | Output is correct |
| 20 | Correct | 3 ms | 376 KB | Output is correct |
| 21 | Correct | 608 ms | 1416 KB | Output is correct |
| 22 | Correct | 605 ms | 1412 KB | Output is correct |
| 23 | Correct | 583 ms | 1420 KB | Output is correct |
| 24 | Correct | 628 ms | 1528 KB | Output is correct |
| 25 | Correct | 629 ms | 1416 KB | Output is correct |
| 26 | Correct | 631 ms | 1172 KB | Output is correct |
| 27 | Correct | 636 ms | 1204 KB | Output is correct |
| 28 | Correct | 644 ms | 1168 KB | Output is correct |
| 29 | Correct | 666 ms | 1168 KB | Output is correct |
| 30 | Execution timed out | 2077 ms | 179876 KB | Time limit exceeded |
| 31 | Halted | 0 ms | 0 KB | - |