#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i=a; i<int(b); i++)
long long m=1e9+7;
int main() {
int n;
cin >> n;
vector<long long> a(n);
vector<long long> b(n);
rep(i,0,n) {
cin >> a[i] >> b[i];
}
unordered_map<long long, long long> x;
x[0]=1;
rep (i,0,n) {
long long lo,hi;
lo=a[i];
hi=b[i];
long long sum=0;
vector<pair<long long, long long>> save;
for (auto c:x) {
long long size=c.first;
long long num=c.second;
//cout << size << " " << num << endl;
if (size<lo) {sum+=num; sum%=m;}
else if (size<hi) save.push_back(c);
}
//cout << endl;
sort(save.begin(),save.end());
long long j=0;
rep (i,lo,hi+1) {
while(j<save.size() &&save[j].first<i) {
sum+=save[j].second;
sum&=m;
j++;
}
if (x.find(i)==x.end()) {
x[i]=sum;
}
else {
x[i]+=sum;
x[i]%=m;
}
}
}
long long sum=0;
for (auto c:x){
sum+=c.second;
sum%=m;
//cout << c.first << " " << c.second << endl;
}
sum+=m;
sum-=1;
sum%=m;
cout << sum << endl;
}
Compilation message
boat.cpp: In function 'int main()':
boat.cpp:34:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(j<save.size() &&save[j].first<i) {
~^~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
248 KB |
Output is correct |
| 2 |
Correct |
4 ms |
356 KB |
Output is correct |
| 3 |
Correct |
5 ms |
564 KB |
Output is correct |
| 4 |
Correct |
5 ms |
564 KB |
Output is correct |
| 5 |
Correct |
4 ms |
564 KB |
Output is correct |
| 6 |
Correct |
6 ms |
564 KB |
Output is correct |
| 7 |
Correct |
6 ms |
564 KB |
Output is correct |
| 8 |
Correct |
6 ms |
636 KB |
Output is correct |
| 9 |
Correct |
7 ms |
636 KB |
Output is correct |
| 10 |
Correct |
6 ms |
636 KB |
Output is correct |
| 11 |
Correct |
6 ms |
684 KB |
Output is correct |
| 12 |
Correct |
5 ms |
688 KB |
Output is correct |
| 13 |
Correct |
6 ms |
688 KB |
Output is correct |
| 14 |
Correct |
5 ms |
688 KB |
Output is correct |
| 15 |
Correct |
7 ms |
688 KB |
Output is correct |
| 16 |
Correct |
4 ms |
688 KB |
Output is correct |
| 17 |
Correct |
4 ms |
688 KB |
Output is correct |
| 18 |
Correct |
3 ms |
688 KB |
Output is correct |
| 19 |
Correct |
3 ms |
688 KB |
Output is correct |
| 20 |
Correct |
4 ms |
688 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
248 KB |
Output is correct |
| 2 |
Correct |
4 ms |
356 KB |
Output is correct |
| 3 |
Correct |
5 ms |
564 KB |
Output is correct |
| 4 |
Correct |
5 ms |
564 KB |
Output is correct |
| 5 |
Correct |
4 ms |
564 KB |
Output is correct |
| 6 |
Correct |
6 ms |
564 KB |
Output is correct |
| 7 |
Correct |
6 ms |
564 KB |
Output is correct |
| 8 |
Correct |
6 ms |
636 KB |
Output is correct |
| 9 |
Correct |
7 ms |
636 KB |
Output is correct |
| 10 |
Correct |
6 ms |
636 KB |
Output is correct |
| 11 |
Correct |
6 ms |
684 KB |
Output is correct |
| 12 |
Correct |
5 ms |
688 KB |
Output is correct |
| 13 |
Correct |
6 ms |
688 KB |
Output is correct |
| 14 |
Correct |
5 ms |
688 KB |
Output is correct |
| 15 |
Correct |
7 ms |
688 KB |
Output is correct |
| 16 |
Correct |
4 ms |
688 KB |
Output is correct |
| 17 |
Correct |
4 ms |
688 KB |
Output is correct |
| 18 |
Correct |
3 ms |
688 KB |
Output is correct |
| 19 |
Correct |
3 ms |
688 KB |
Output is correct |
| 20 |
Correct |
4 ms |
688 KB |
Output is correct |
| 21 |
Incorrect |
117 ms |
1040 KB |
Output isn't correct |
| 22 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Execution timed out |
2084 ms |
525312 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
248 KB |
Output is correct |
| 2 |
Correct |
4 ms |
356 KB |
Output is correct |
| 3 |
Correct |
5 ms |
564 KB |
Output is correct |
| 4 |
Correct |
5 ms |
564 KB |
Output is correct |
| 5 |
Correct |
4 ms |
564 KB |
Output is correct |
| 6 |
Correct |
6 ms |
564 KB |
Output is correct |
| 7 |
Correct |
6 ms |
564 KB |
Output is correct |
| 8 |
Correct |
6 ms |
636 KB |
Output is correct |
| 9 |
Correct |
7 ms |
636 KB |
Output is correct |
| 10 |
Correct |
6 ms |
636 KB |
Output is correct |
| 11 |
Correct |
6 ms |
684 KB |
Output is correct |
| 12 |
Correct |
5 ms |
688 KB |
Output is correct |
| 13 |
Correct |
6 ms |
688 KB |
Output is correct |
| 14 |
Correct |
5 ms |
688 KB |
Output is correct |
| 15 |
Correct |
7 ms |
688 KB |
Output is correct |
| 16 |
Correct |
4 ms |
688 KB |
Output is correct |
| 17 |
Correct |
4 ms |
688 KB |
Output is correct |
| 18 |
Correct |
3 ms |
688 KB |
Output is correct |
| 19 |
Correct |
3 ms |
688 KB |
Output is correct |
| 20 |
Correct |
4 ms |
688 KB |
Output is correct |
| 21 |
Incorrect |
117 ms |
1040 KB |
Output isn't correct |
| 22 |
Halted |
0 ms |
0 KB |
- |
