//#pragma GCC optimize("Ofast,unroll-loops")
// #pragma GCC target("avx,avx2,sse,sse2")
#include<bits/stdc++.h>
#define int long long
#define down cout<<'\n';
#define NHP ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define checktime cerr << (double)clock() / CLOCKS_PER_SEC * 1000 << " ms";
using namespace std;
void phongbeo();
const int mod2=1e9+7;
const int mod1=998244353;
struct ib
{
int a;
int b;
};
struct icd
{
int a,b;
};
struct ic
{
int a,b,c;
};
struct id
{
int a,b,c,d;
};
int n,m,s2,s4,s3,sf,k,r,dem=0,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,l;
int i,s10,s12;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
//fin(task),fou(task);
#endif
NHP
//modwwe
phongbeo(),down
checktime
}
int dp[1000001];
ib a[501];
void phongbeo()
{
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i].a>>a[i].b;
s4=max(s4,a[i].b);
}
for(int i=1;i<=n;i++)
{s2=1;
for(int j=1;j<=a[i].a-1;j++)
s2+=dp[j],s2=s2%mod2;
for(int j=a[i].a;j<=a[i].b;j++)
{ s7=dp[j];
dp[j]+=s2;
dp[j]=dp[j]%mod2;
s2+=s7;
s2=s2%mod2;
}
}
s3=0;
for(int j=1;j<=s4;j++){
s3+=dp[j];
s3=s3%mod2;
}
cout<<s3;
}
Compilation message
boat.cpp:39:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
39 | main()
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
5 ms |
600 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
5 ms |
600 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
5 ms |
604 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
5 ms |
600 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |