| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 734529 |
2023-05-02T15:15:52 Z |
vjudge1 |
Boat (APIO16_boat) |
C++14 |
|
590 ms |
2472 KB |
#include<stdio.h>
#include<algorithm>
#define N 509
#define M 1009
#define mod 1000000007
using namespace std;
inline char nc()
{
static char buf[99999],*l,*r;
return l==r&&(r=(l=buf)+fread(buf,1,99999,stdin),l==r)?EOF:*l++;
}
inline void read(int&x)
{
char c=nc();for(;c<'0'||'9'<c;c=nc());
for(x=0;'0'<=c&&c<='9';x=(x<<3)+(x<<1)+(c^48),c=nc());
}
int n,m,a[N],b[N],lsh[M],f[N][M],inv[N],ans;
inline long long ksm(long long a,int b)
{
long long ans=1;
for(;b;b>>=1,a*=a,a%=mod)if(b&1)ans*=a,ans%=mod;
return ans;
}
main()
{
read(n);
for(int i=1;i<=n;inv[i]=ksm(i,mod-2),++i)
read(a[i]),read(b[i]),lsh[m++]=a[i],lsh[m++]=b[i]+1;
lsh[m++]=0;lsh[m++]=1000000001;
sort(lsh,lsh+m);m=unique(lsh,lsh+m)-lsh;--m;
for(int i=0;i<m;f[0][i++]=1);
for(int i=1;i<=n;++i)
{
for(int l=lower_bound(lsh,lsh+m,a[i])-lsh,r=upper_bound(lsh,lsh+m,b[i])-lsh
;l<r;++l)
{
for(int j=i-1,k=lsh[l+1]-lsh[l],cnt=1;j>=0;--j)
{
f[i][l]=(f[i][l]+(long long)(k)*f[j][l-1])%mod;
if(a[j]<=lsh[l]&&lsh[l]<=b[j])++cnt,
k=k*(long long)(lsh[l+1]-lsh[l]+cnt-1)%mod*inv[cnt]%mod;
}
}
for(int j=1;j<m;++j)f[i][j]+=f[i][j-1]-mod,f[i][j]>>31&&(f[i][j]+=mod);
ans+=f[i][m-1]-mod,ans>>31&&(ans+=mod);
}
printf("%d",ans);
}
Compilation message
boat.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
24 | main()
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 3 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 4 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 5 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2236 KB |
Output is correct |
| 7 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 8 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 9 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 10 |
Correct |
5 ms |
2248 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2228 KB |
Output is correct |
| 14 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 15 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2228 KB |
Output is correct |
| 17 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 18 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 20 |
Correct |
3 ms |
2228 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 3 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 4 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 5 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2236 KB |
Output is correct |
| 7 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 8 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 9 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 10 |
Correct |
5 ms |
2248 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2228 KB |
Output is correct |
| 14 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 15 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2228 KB |
Output is correct |
| 17 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 18 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 20 |
Correct |
3 ms |
2228 KB |
Output is correct |
| 21 |
Correct |
256 ms |
2252 KB |
Output is correct |
| 22 |
Correct |
259 ms |
2168 KB |
Output is correct |
| 23 |
Correct |
218 ms |
2276 KB |
Output is correct |
| 24 |
Correct |
257 ms |
2264 KB |
Output is correct |
| 25 |
Correct |
246 ms |
2208 KB |
Output is correct |
| 26 |
Correct |
516 ms |
2212 KB |
Output is correct |
| 27 |
Correct |
536 ms |
2216 KB |
Output is correct |
| 28 |
Correct |
501 ms |
2244 KB |
Output is correct |
| 29 |
Correct |
486 ms |
2264 KB |
Output is correct |
| 30 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 31 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 32 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 33 |
Correct |
5 ms |
2204 KB |
Output is correct |
| 34 |
Correct |
6 ms |
2300 KB |
Output is correct |
| 35 |
Correct |
7 ms |
2224 KB |
Output is correct |
| 36 |
Correct |
6 ms |
2240 KB |
Output is correct |
| 37 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 38 |
Correct |
6 ms |
2260 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
596 KB |
Output is correct |
| 2 |
Correct |
3 ms |
596 KB |
Output is correct |
| 3 |
Correct |
3 ms |
596 KB |
Output is correct |
| 4 |
Correct |
3 ms |
684 KB |
Output is correct |
| 5 |
Correct |
3 ms |
596 KB |
Output is correct |
| 6 |
Correct |
6 ms |
616 KB |
Output is correct |
| 7 |
Correct |
6 ms |
680 KB |
Output is correct |
| 8 |
Correct |
5 ms |
596 KB |
Output is correct |
| 9 |
Correct |
6 ms |
692 KB |
Output is correct |
| 10 |
Correct |
6 ms |
648 KB |
Output is correct |
| 11 |
Correct |
3 ms |
684 KB |
Output is correct |
| 12 |
Correct |
2 ms |
596 KB |
Output is correct |
| 13 |
Correct |
3 ms |
596 KB |
Output is correct |
| 14 |
Correct |
3 ms |
596 KB |
Output is correct |
| 15 |
Correct |
3 ms |
596 KB |
Output is correct |
| 16 |
Correct |
2 ms |
596 KB |
Output is correct |
| 17 |
Correct |
2 ms |
596 KB |
Output is correct |
| 18 |
Correct |
2 ms |
596 KB |
Output is correct |
| 19 |
Correct |
2 ms |
596 KB |
Output is correct |
| 20 |
Correct |
2 ms |
596 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 3 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 4 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 5 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 6 |
Correct |
5 ms |
2236 KB |
Output is correct |
| 7 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 8 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 9 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 10 |
Correct |
5 ms |
2248 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 12 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 13 |
Correct |
5 ms |
2228 KB |
Output is correct |
| 14 |
Correct |
5 ms |
2216 KB |
Output is correct |
| 15 |
Correct |
4 ms |
2260 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2228 KB |
Output is correct |
| 17 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 18 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 20 |
Correct |
3 ms |
2228 KB |
Output is correct |
| 21 |
Correct |
256 ms |
2252 KB |
Output is correct |
| 22 |
Correct |
259 ms |
2168 KB |
Output is correct |
| 23 |
Correct |
218 ms |
2276 KB |
Output is correct |
| 24 |
Correct |
257 ms |
2264 KB |
Output is correct |
| 25 |
Correct |
246 ms |
2208 KB |
Output is correct |
| 26 |
Correct |
516 ms |
2212 KB |
Output is correct |
| 27 |
Correct |
536 ms |
2216 KB |
Output is correct |
| 28 |
Correct |
501 ms |
2244 KB |
Output is correct |
| 29 |
Correct |
486 ms |
2264 KB |
Output is correct |
| 30 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 31 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 32 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 33 |
Correct |
5 ms |
2204 KB |
Output is correct |
| 34 |
Correct |
6 ms |
2300 KB |
Output is correct |
| 35 |
Correct |
7 ms |
2224 KB |
Output is correct |
| 36 |
Correct |
6 ms |
2240 KB |
Output is correct |
| 37 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 38 |
Correct |
6 ms |
2260 KB |
Output is correct |
| 39 |
Correct |
3 ms |
596 KB |
Output is correct |
| 40 |
Correct |
3 ms |
596 KB |
Output is correct |
| 41 |
Correct |
3 ms |
596 KB |
Output is correct |
| 42 |
Correct |
3 ms |
684 KB |
Output is correct |
| 43 |
Correct |
3 ms |
596 KB |
Output is correct |
| 44 |
Correct |
6 ms |
616 KB |
Output is correct |
| 45 |
Correct |
6 ms |
680 KB |
Output is correct |
| 46 |
Correct |
5 ms |
596 KB |
Output is correct |
| 47 |
Correct |
6 ms |
692 KB |
Output is correct |
| 48 |
Correct |
6 ms |
648 KB |
Output is correct |
| 49 |
Correct |
3 ms |
684 KB |
Output is correct |
| 50 |
Correct |
2 ms |
596 KB |
Output is correct |
| 51 |
Correct |
3 ms |
596 KB |
Output is correct |
| 52 |
Correct |
3 ms |
596 KB |
Output is correct |
| 53 |
Correct |
3 ms |
596 KB |
Output is correct |
| 54 |
Correct |
2 ms |
596 KB |
Output is correct |
| 55 |
Correct |
2 ms |
596 KB |
Output is correct |
| 56 |
Correct |
2 ms |
596 KB |
Output is correct |
| 57 |
Correct |
2 ms |
596 KB |
Output is correct |
| 58 |
Correct |
2 ms |
596 KB |
Output is correct |
| 59 |
Correct |
283 ms |
2472 KB |
Output is correct |
| 60 |
Correct |
348 ms |
2256 KB |
Output is correct |
| 61 |
Correct |
235 ms |
2244 KB |
Output is correct |
| 62 |
Correct |
279 ms |
2228 KB |
Output is correct |
| 63 |
Correct |
263 ms |
2456 KB |
Output is correct |
| 64 |
Correct |
590 ms |
2244 KB |
Output is correct |
| 65 |
Correct |
566 ms |
2208 KB |
Output is correct |
| 66 |
Correct |
562 ms |
2276 KB |
Output is correct |
| 67 |
Correct |
551 ms |
2168 KB |
Output is correct |
| 68 |
Correct |
574 ms |
2328 KB |
Output is correct |
| 69 |
Correct |
208 ms |
2256 KB |
Output is correct |
| 70 |
Correct |
220 ms |
2244 KB |
Output is correct |
| 71 |
Correct |
227 ms |
2188 KB |
Output is correct |
| 72 |
Correct |
236 ms |
2268 KB |
Output is correct |
| 73 |
Correct |
244 ms |
2176 KB |
Output is correct |
| 74 |
Correct |
61 ms |
2176 KB |
Output is correct |
| 75 |
Correct |
55 ms |
2180 KB |
Output is correct |
| 76 |
Correct |
56 ms |
2168 KB |
Output is correct |
| 77 |
Correct |
53 ms |
2224 KB |
Output is correct |
| 78 |
Correct |
55 ms |
2260 KB |
Output is correct |
