Submission #1677893
Source Code Expand
#include<bits/stdc++.h>
using namespace std;
typedef double db;
typedef long long ll;
#define w1 first
#define w2 second
#define ls (x<<1)
#define rs (x<<1|1)
#define pb push_back
#define mid ((l+r)>>1)
#define SZ(x) ((x).size())
#define All(x) (x).begin(),(x).end()
#define rep(i,a,b) for(int (i)=(a);(i)<=(b);(i)++)
#define rep2(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
#define per(i,a,b) for(int (i)=(a);(i)>=(b);(i)--)
#define Rep(p,x) for(int (p)=head[(x)];(p);(p)=nxt[(p)])
template<class T>void read(T&num){
num=0;T f=1;char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9')num=num*10+ch-'0',ch=getchar();
num*=f;
}
int power(int x,int k,int p){int res=1;for(;k;k>>=1,x=1ll*x*x%p)if(k&1)res=1ll*res*x%p;return res;}
const int maxn=2e5+5,inf=1e9+10,mod=1e9+7;
int totmin,totrest,X,Y,n;
int mini[maxn],ban[maxn],rest[maxn],c[maxn],w[maxn],mini2[maxn],mini3[maxn],mini4[maxn];
int fac[maxn],ifac[maxn];
int main(){
read(n);
fac[0]=1;rep(i,1,n)fac[i]=1ll*fac[i-1]*i%mod;
rep(i,0,n)ifac[i]=power(fac[i],mod-2,mod);
rep(i,1,n)mini[i]=inf;
totmin=inf;
read(X);read(Y);
rep(i,1,n)read(c[i]),read(w[i]),mini[c[i]]=min(mini[c[i]],w[i]),totmin=min(totmin,w[i]);
mini2[1]=inf;rep(i,2,n)mini2[i]=min(mini2[i-1],mini[i-1]);
mini3[n]=inf;per(i,n-1,1)mini3[i]=min(mini3[i+1],mini[i+1]);
rep(i,1,n)mini4[i]=min(mini2[i],mini3[i]);
int cnt=n;
rep(i,1,n)if(mini[i]+totmin>Y)ban[i]=1,cnt--;
if(cnt<=1)return puts("1"),0;
rep(i,1,n)if(!ban[c[i]]&&((w[i]+mini[c[i]]<=X)||(w[i]+mini4[c[i]]<=Y)))rest[c[i]]++,totrest++;
int ans=fac[totrest];
rep(i,1,n)ans=1ll*ans*ifac[rest[i]]%mod;
printf("%d\n",ans);
return 0;
}
Submission Info
Submission Time |
|
Task |
D - Colorful Balls |
User |
Vegetable |
Language |
C++14 (GCC 5.4.1) |
Score |
1000 |
Code Size |
1703 Byte |
Status |
AC |
Exec Time |
64 ms |
Memory |
8064 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
1000 / 1000 |
Status |
|
|
Set Name |
Test Cases |
Sample |
00_example_01.txt, 00_example_02.txt, 00_example_03.txt |
All |
00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt |
Case Name |
Status |
Exec Time |
Memory |
00_example_01.txt |
AC |
2 ms |
4352 KB |
00_example_02.txt |
AC |
2 ms |
4352 KB |
00_example_03.txt |
AC |
2 ms |
4352 KB |
01.txt |
AC |
2 ms |
4352 KB |
02.txt |
AC |
2 ms |
4352 KB |
03.txt |
AC |
4 ms |
4480 KB |
04.txt |
AC |
2 ms |
4352 KB |
05.txt |
AC |
3 ms |
4352 KB |
06.txt |
AC |
2 ms |
4352 KB |
07.txt |
AC |
30 ms |
6272 KB |
08.txt |
AC |
2 ms |
4352 KB |
09.txt |
AC |
19 ms |
5504 KB |
10.txt |
AC |
12 ms |
4992 KB |
11.txt |
AC |
2 ms |
4352 KB |
12.txt |
AC |
2 ms |
4352 KB |
13.txt |
AC |
4 ms |
4480 KB |
14.txt |
AC |
2 ms |
4352 KB |
15.txt |
AC |
14 ms |
5120 KB |
16.txt |
AC |
31 ms |
6272 KB |
17.txt |
AC |
7 ms |
4736 KB |
18.txt |
AC |
15 ms |
5248 KB |
19.txt |
AC |
28 ms |
6144 KB |
20.txt |
AC |
62 ms |
8064 KB |
21.txt |
AC |
63 ms |
8064 KB |
22.txt |
AC |
61 ms |
8064 KB |
23.txt |
AC |
62 ms |
8064 KB |
24.txt |
AC |
62 ms |
8064 KB |
25.txt |
AC |
62 ms |
8064 KB |
26.txt |
AC |
64 ms |
8064 KB |
27.txt |
AC |
60 ms |
7936 KB |
28.txt |
AC |
64 ms |
8064 KB |
29.txt |
AC |
63 ms |
8064 KB |
30.txt |
AC |
62 ms |
8064 KB |
31.txt |
AC |
64 ms |
8064 KB |
32.txt |
AC |
63 ms |
8064 KB |
33.txt |
AC |
64 ms |
8064 KB |
34.txt |
AC |
62 ms |
8064 KB |
35.txt |
AC |
63 ms |
7936 KB |
36.txt |
AC |
63 ms |
8064 KB |
37.txt |
AC |
63 ms |
8064 KB |
38.txt |
AC |
63 ms |
7936 KB |
39.txt |
AC |
63 ms |
8064 KB |
40.txt |
AC |
60 ms |
8064 KB |
41.txt |
AC |
61 ms |
8064 KB |
42.txt |
AC |
61 ms |
8064 KB |
43.txt |
AC |
60 ms |
8064 KB |
44.txt |
AC |
61 ms |
8064 KB |
45.txt |
AC |
61 ms |
8064 KB |
46.txt |
AC |
61 ms |
8064 KB |
47.txt |
AC |
56 ms |
7936 KB |
48.txt |
AC |
58 ms |
7936 KB |
49.txt |
AC |
58 ms |
7936 KB |
50.txt |
AC |
56 ms |
7936 KB |
51.txt |
AC |
57 ms |
7936 KB |
52.txt |
AC |
54 ms |
7936 KB |
53.txt |
AC |
53 ms |
7936 KB |
54.txt |
AC |
54 ms |
7936 KB |