#include <iostream>
#include <cstring>
using namespace std;
const int N=1000000, M=1000000007;
int n, c[N+1], d[N+1], ld[N+1], ls[N+1];
int main()
{
ios_base::sync_with_stdio(false);
cin>>n;
for (int i=1; i<=n; ++i)
cin>>c[i]>>d[i];
ld[0]=ls[0]=1;
for (int zaw=1; zaw<=n; ++zaw)
if (ld[zaw-1])
{
// if ((zaw&1023)==0)
// cerr<<zaw<<endl;
for (int z=zaw, lz=0, mi=0, ma=N; z<=n; ++z)
{
++lz;
mi=max(mi, c[z]);
ma=min(ma, d[z]);
if (ma<mi || ma<lz)
break;
if (mi<=lz)
{
int x=ld[zaw-1]+1;
if (ld[z]<x)
{
ld[z]=x;
ls[z]=ls[zaw-1];
}
else if (ld[z]==x)
{
ls[z]+=ls[zaw-1];
if (ls[z]>=M)
ls[z]-=M;
}
}
}
}
if (ld[n]) cout<<(ld[n]-1)<<' '<<ls[n]<<endl;
else cout<<"NIE"<<endl;
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #include <iostream> #include <cstring> using namespace std; const int N=1000000, M=1000000007; int n, c[N+1], d[N+1], ld[N+1], ls[N+1]; int main() { ios_base::sync_with_stdio(false); cin>>n; for (int i=1; i<=n; ++i) cin>>c[i]>>d[i]; ld[0]=ls[0]=1; for (int zaw=1; zaw<=n; ++zaw) if (ld[zaw-1]) { // if ((zaw&1023)==0) // cerr<<zaw<<endl; for (int z=zaw, lz=0, mi=0, ma=N; z<=n; ++z) { ++lz; mi=max(mi, c[z]); ma=min(ma, d[z]); if (ma<mi || ma<lz) break; if (mi<=lz) { int x=ld[zaw-1]+1; if (ld[z]<x) { ld[z]=x; ls[z]=ls[zaw-1]; } else if (ld[z]==x) { ls[z]+=ls[zaw-1]; if (ls[z]>=M) ls[z]-=M; } } } } if (ld[n]) cout<<(ld[n]-1)<<' '<<ls[n]<<endl; else cout<<"NIE"<<endl; return 0; } |
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