oj.uz

Submission #117863

# Submission time Handle Problem Language Result Execution time Memory
117863 2019-06-17T09:06:52 Z ckodser Boat (APIO16_boat) C++14
100 / 100
 1181 ms 8824 KB 
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif

int gcd(int a, int b) {return b == 0 ? a : gcd(b, a % b);}

#define ll int
#define pb push_back
#define ld long double
#define mp make_pair
#define F first
#define S second
#define pii pair<ll,ll> 

using namespace :: std;

const ll maxn=590;
const ll mod=1e9+7;
const ll inf=1e9+9;


inline void zarb(ll &a,long long  b){a=((long long)a*b)%mod;}
inline ll zarbO(long long a,long long b){return (a*b)%mod;}
inline void jam(ll &a,ll b){a+=b;if(a>=mod)a-=mod;}
inline ll jamO(ll a,ll b){a+=b;if(a>=mod)a-=mod;return a;}




ll dp[maxn][maxn*2];
ll dppar[maxn][maxn*2];
ll f[maxn*2][maxn];
ll ent[maxn][maxn];


ll rev[maxn];
ll a[maxn];
ll b[maxn];

ll poww(ll a,ll b){
	ll ans=1;
	while(b){
		if(b&1){
			zarb(ans,a);
		}
		b>>=1;
		zarb(a,a);
	}
	return ans;
}	


ll tmp[maxn];
void hesab(ll x,ll tol){
	tmp[0]=1;
	for(ll i=1;i<maxn;i++){
		tmp[i]=zarbO(tmp[i-1],zarbO(tol-i+1,rev[i]));
	}
	for(ll t=0;t+1<maxn;t++){
		for(ll i=0;i<=t;i++){
			jam(f[x][t],zarbO(ent[t][i],tmp[i+1]));
		}
	}
}
int main(){
	for(ll i=0;i<maxn;i++){
		rev[i]=poww(i,mod-2);
	}	
	ent[0][0]=1;
	for(ll i=1;i<maxn;i++){
		ent[i][0]=1;
		ent[i][i]=1;
		for(ll j=1;j<i;j++){
			ent[i][j]=jamO(ent[i-1][j],ent[i-1][j-1]);
		}
	}
	ll n;
	cin>>n;
	vector<ll> vec;
	vec.pb(0);
	vec.pb(inf);
	for(ll i=0;i<n;i++){
		cin>>a[i]>>b[i];
		vec.pb(a[i]);
		vec.pb(b[i]+1);
	}
	{
		sort(vec.begin(),vec.end());
		auto it=unique(vec.begin(),vec.end());
		vec.resize(it-vec.begin());
	}
	for(ll i=0;i+1<(ll)vec.size();i++){
		ll tol=vec[i+1]-vec[i];
		hesab(i,tol);
	}
	ll ans=0;
	for(ll i=0;i<n;i++){
		for(ll j=0;j+1<(ll)vec.size();j++){
			//dp[i][j];
			if(a[i]<=vec[j] && b[i]+1>=vec[j+1]){
				ll tol=vec[j+1]-vec[j];
				ll tedad=0;
				for(ll z=i-1;z>=0;z--){
					if(j)jam(dp[i][j],zarbO(dppar[z][j-1],f[j][tedad]));
					tedad+=(a[z]<=vec[j] && b[z]+1>=vec[j+1]);	
				}
				jam(dp[i][j],f[j][tedad]);
			}
		}
		dppar[i][0]=dp[i][0];
		for(ll j=1;j+1<(ll)vec.size();j++){
			dppar[i][j]=jamO(dppar[i][j-1],dp[i][j]);
		}
		jam(ans,dppar[i][vec.size()-2]);
	}
	cout<<ans;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:151:8: warning: unused variable 'tol' [-Wunused-variable]
     ll tol=vec[j+1]-vec[j];
        ^~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 434 ms 8184 KB Output is correct
2 Correct 433 ms 8184 KB Output is correct
3 Correct 438 ms 8164 KB Output is correct
4 Correct 446 ms 8108 KB Output is correct
5 Correct 432 ms 8260 KB Output is correct
6 Correct 455 ms 8328 KB Output is correct
7 Correct 442 ms 8468 KB Output is correct
8 Correct 471 ms 8312 KB Output is correct
9 Correct 444 ms 8604 KB Output is correct
10 Correct 431 ms 8352 KB Output is correct
11 Correct 447 ms 8440 KB Output is correct
12 Correct 441 ms 8372 KB Output is correct
13 Correct 444 ms 8392 KB Output is correct
14 Correct 439 ms 8368 KB Output is correct
15 Correct 442 ms 8312 KB Output is correct
16 Correct 86 ms 6492 KB Output is correct
17 Correct 90 ms 6516 KB Output is correct
18 Correct 88 ms 6520 KB Output is correct
19 Correct 89 ms 6520 KB Output is correct
20 Correct 90 ms 6392 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 434 ms 8184 KB Output is correct
2 Correct 433 ms 8184 KB Output is correct
3 Correct 438 ms 8164 KB Output is correct
4 Correct 446 ms 8108 KB Output is correct
5 Correct 432 ms 8260 KB Output is correct
6 Correct 455 ms 8328 KB Output is correct
7 Correct 442 ms 8468 KB Output is correct
8 Correct 471 ms 8312 KB Output is correct
9 Correct 444 ms 8604 KB Output is correct
10 Correct 431 ms 8352 KB Output is correct
11 Correct 447 ms 8440 KB Output is correct
12 Correct 441 ms 8372 KB Output is correct
13 Correct 444 ms 8392 KB Output is correct
14 Correct 439 ms 8368 KB Output is correct
15 Correct 442 ms 8312 KB Output is correct
16 Correct 86 ms 6492 KB Output is correct
17 Correct 90 ms 6516 KB Output is correct
18 Correct 88 ms 6520 KB Output is correct
19 Correct 89 ms 6520 KB Output is correct
20 Correct 90 ms 6392 KB Output is correct
21 Correct 871 ms 8384 KB Output is correct
22 Correct 813 ms 8456 KB Output is correct
23 Correct 779 ms 8492 KB Output is correct
24 Correct 812 ms 8312 KB Output is correct
25 Correct 808 ms 8436 KB Output is correct
26 Correct 932 ms 8404 KB Output is correct
27 Correct 961 ms 8696 KB Output is correct
28 Correct 1181 ms 8584 KB Output is correct
29 Correct 997 ms 8480 KB Output is correct
30 Correct 433 ms 8316 KB Output is correct
31 Correct 431 ms 8332 KB Output is correct
32 Correct 444 ms 8440 KB Output is correct
33 Correct 430 ms 8568 KB Output is correct
34 Correct 431 ms 8440 KB Output is correct
35 Correct 426 ms 8204 KB Output is correct
36 Correct 433 ms 8360 KB Output is correct
37 Correct 428 ms 8176 KB Output is correct
38 Correct 446 ms 8076 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 94 ms 3064 KB Output is correct
2 Correct 91 ms 3132 KB Output is correct
3 Correct 92 ms 3064 KB Output is correct
4 Correct 98 ms 3036 KB Output is correct
5 Correct 92 ms 3064 KB Output is correct
6 Correct 93 ms 3092 KB Output is correct
7 Correct 95 ms 3064 KB Output is correct
8 Correct 101 ms 3064 KB Output is correct
9 Correct 95 ms 3064 KB Output is correct
10 Correct 94 ms 3064 KB Output is correct
11 Correct 94 ms 3032 KB Output is correct
12 Correct 92 ms 3136 KB Output is correct
13 Correct 94 ms 3192 KB Output is correct
14 Correct 92 ms 3036 KB Output is correct
15 Correct 95 ms 3064 KB Output is correct
16 Correct 57 ms 2936 KB Output is correct
17 Correct 60 ms 2808 KB Output is correct
18 Correct 67 ms 2852 KB Output is correct
19 Correct 56 ms 2808 KB Output is correct
20 Correct 59 ms 2808 KB Output is correct

Subtask #4
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 434 ms 8184 KB Output is correct
2 Correct 433 ms 8184 KB Output is correct
3 Correct 438 ms 8164 KB Output is correct
4 Correct 446 ms 8108 KB Output is correct
5 Correct 432 ms 8260 KB Output is correct
6 Correct 455 ms 8328 KB Output is correct
7 Correct 442 ms 8468 KB Output is correct
8 Correct 471 ms 8312 KB Output is correct
9 Correct 444 ms 8604 KB Output is correct
10 Correct 431 ms 8352 KB Output is correct
11 Correct 447 ms 8440 KB Output is correct
12 Correct 441 ms 8372 KB Output is correct
13 Correct 444 ms 8392 KB Output is correct
14 Correct 439 ms 8368 KB Output is correct
15 Correct 442 ms 8312 KB Output is correct
16 Correct 86 ms 6492 KB Output is correct
17 Correct 90 ms 6516 KB Output is correct
18 Correct 88 ms 6520 KB Output is correct
19 Correct 89 ms 6520 KB Output is correct
20 Correct 90 ms 6392 KB Output is correct
21 Correct 871 ms 8384 KB Output is correct
22 Correct 813 ms 8456 KB Output is correct
23 Correct 779 ms 8492 KB Output is correct
24 Correct 812 ms 8312 KB Output is correct
25 Correct 808 ms 8436 KB Output is correct
26 Correct 932 ms 8404 KB Output is correct
27 Correct 961 ms 8696 KB Output is correct
28 Correct 1181 ms 8584 KB Output is correct
29 Correct 997 ms 8480 KB Output is correct
30 Correct 433 ms 8316 KB Output is correct
31 Correct 431 ms 8332 KB Output is correct
32 Correct 444 ms 8440 KB Output is correct
33 Correct 430 ms 8568 KB Output is correct
34 Correct 431 ms 8440 KB Output is correct
35 Correct 426 ms 8204 KB Output is correct
36 Correct 433 ms 8360 KB Output is correct
37 Correct 428 ms 8176 KB Output is correct
38 Correct 446 ms 8076 KB Output is correct
39 Correct 94 ms 3064 KB Output is correct
40 Correct 91 ms 3132 KB Output is correct
41 Correct 92 ms 3064 KB Output is correct
42 Correct 98 ms 3036 KB Output is correct
43 Correct 92 ms 3064 KB Output is correct
44 Correct 93 ms 3092 KB Output is correct
45 Correct 95 ms 3064 KB Output is correct
46 Correct 101 ms 3064 KB Output is correct
47 Correct 95 ms 3064 KB Output is correct
48 Correct 94 ms 3064 KB Output is correct
49 Correct 94 ms 3032 KB Output is correct
50 Correct 92 ms 3136 KB Output is correct
51 Correct 94 ms 3192 KB Output is correct
52 Correct 92 ms 3036 KB Output is correct
53 Correct 95 ms 3064 KB Output is correct
54 Correct 57 ms 2936 KB Output is correct
55 Correct 60 ms 2808 KB Output is correct
56 Correct 67 ms 2852 KB Output is correct
57 Correct 56 ms 2808 KB Output is correct
58 Correct 59 ms 2808 KB Output is correct
59 Correct 912 ms 8712 KB Output is correct
60 Correct 878 ms 8516 KB Output is correct
61 Correct 895 ms 8592 KB Output is correct
62 Correct 1016 ms 8696 KB Output is correct
63 Correct 949 ms 8588 KB Output is correct
64 Correct 1072 ms 8676 KB Output is correct
65 Correct 1054 ms 8796 KB Output is correct
66 Correct 1057 ms 8816 KB Output is correct
67 Correct 1094 ms 8824 KB Output is correct
68 Correct 1074 ms 8696 KB Output is correct
69 Correct 793 ms 8584 KB Output is correct
70 Correct 768 ms 8640 KB Output is correct
71 Correct 741 ms 8756 KB Output is correct
72 Correct 755 ms 8696 KB Output is correct
73 Correct 778 ms 8736 KB Output is correct
74 Correct 200 ms 6624 KB Output is correct
75 Correct 180 ms 6616 KB Output is correct
76 Correct 178 ms 6520 KB Output is correct
77 Correct 177 ms 6648 KB Output is correct
78 Correct 181 ms 6520 KB Output is correct