oj.uz

Submission #108408

# Submission time Handle Problem Language Result Execution time Memory
108408 2019-04-29T06:45:07 Z nxteru Boat (APIO16_boat) C++14
58 / 100
 2000 ms 12248 KB 
#include <bits/stdc++.h>
//#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
using namespace std;
typedef long long ll;
#define M 1000000007
#define PB push_back
ll n,a[505],b[505],dp[505][1005],s[1005][505],f[505],ans,r[1005][505],l[505];
vector<ll>cm;
int main(void){
    scanf("%lld",&n);
    f[1]=1;
    for(int i=2;i<n;i++)f[i]=M-(M/i)*f[M%i]%M;
    for(int i=0;i<n;i++){
		scanf("%lld%lld",a+i,b+i);
		a[i]--;
		cm.PB(a[i]);
		cm.PB(b[i]);
	}
	sort(cm.begin(),cm.end());
	cm.erase(unique(cm.begin(),cm.end()),cm.end());
	for(int i=0;i<n;i++){
		a[i]=lower_bound(cm.begin(),cm.end(),a[i])-cm.begin();
		b[i]=lower_bound(cm.begin(),cm.end(),b[i])-cm.begin();
	}
	for(int i=n-1;i>=0;i--){
		for(int j=1;j<cm.size();j++){
			if(a[i]<j&&j<=b[i])r[j][i]++;
			r[j][i]+=r[j][i+1];
		}
	}
	for(int i=1;i<cm.size();i++){
		ll p=cm[i]-cm[i-1];
		s[i][0]=1;
		for(ll j=1;j<n;j++){
			s[i][j]=s[i][j-1]*(p+j-1LL)%M*f[j]%M;
		}
	}
	for(int i=0;i<n;i++){
		ll p=1;
		for(int j=1;j<=b[i];j++){
			if(j>a[i]){
				dp[i][j]=p;
				ans=(ans+p*s[j][r[j][i]]%M)%M;
			}
			for(int k=0;k<i;k++)p=(p+dp[k][j]*s[j][r[j][k]-r[j][i]]%M)%M;
		}
	}
	printf("%lld\n",ans);
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=1;j<cm.size();j++){
               ~^~~~~~~~~~
boat.cpp:32:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<cm.size();i++){
              ~^~~~~~~~~~
boat.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
     ~~~~~^~~~~~~~~~~
boat.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",a+i,b+i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 670 ms 10332 KB Output is correct
2 Correct 721 ms 10220 KB Output is correct
3 Correct 770 ms 10276 KB Output is correct
4 Correct 687 ms 10492 KB Output is correct
5 Correct 706 ms 10232 KB Output is correct
6 Correct 1166 ms 10492 KB Output is correct
7 Correct 1146 ms 10552 KB Output is correct
8 Correct 1036 ms 10536 KB Output is correct
9 Correct 923 ms 10336 KB Output is correct
10 Correct 1045 ms 10520 KB Output is correct
11 Correct 1096 ms 10352 KB Output is correct
12 Correct 1010 ms 10316 KB Output is correct
13 Correct 989 ms 10436 KB Output is correct
14 Correct 1010 ms 10528 KB Output is correct
15 Correct 1085 ms 10476 KB Output is correct
16 Correct 85 ms 3704 KB Output is correct
17 Correct 73 ms 3896 KB Output is correct
18 Correct 84 ms 3764 KB Output is correct
19 Correct 64 ms 3844 KB Output is correct
20 Correct 80 ms 3820 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 670 ms 10332 KB Output is correct
2 Correct 721 ms 10220 KB Output is correct
3 Correct 770 ms 10276 KB Output is correct
4 Correct 687 ms 10492 KB Output is correct
5 Correct 706 ms 10232 KB Output is correct
6 Correct 1166 ms 10492 KB Output is correct
7 Correct 1146 ms 10552 KB Output is correct
8 Correct 1036 ms 10536 KB Output is correct
9 Correct 923 ms 10336 KB Output is correct
10 Correct 1045 ms 10520 KB Output is correct
11 Correct 1096 ms 10352 KB Output is correct
12 Correct 1010 ms 10316 KB Output is correct
13 Correct 989 ms 10436 KB Output is correct
14 Correct 1010 ms 10528 KB Output is correct
15 Correct 1085 ms 10476 KB Output is correct
16 Correct 85 ms 3704 KB Output is correct
17 Correct 73 ms 3896 KB Output is correct
18 Correct 84 ms 3764 KB Output is correct
19 Correct 64 ms 3844 KB Output is correct
20 Correct 80 ms 3820 KB Output is correct
21 Correct 890 ms 10836 KB Output is correct
22 Correct 853 ms 10916 KB Output is correct
23 Correct 699 ms 10492 KB Output is correct
24 Correct 959 ms 10492 KB Output is correct
25 Correct 811 ms 10744 KB Output is correct
26 Correct 1557 ms 11256 KB Output is correct
27 Correct 1840 ms 11336 KB Output is correct
28 Correct 1721 ms 11340 KB Output is correct
29 Correct 1635 ms 11144 KB Output is correct
30 Correct 941 ms 10356 KB Output is correct
31 Correct 1002 ms 10412 KB Output is correct
32 Correct 961 ms 10500 KB Output is correct
33 Correct 853 ms 10432 KB Output is correct
34 Correct 858 ms 10216 KB Output is correct
35 Correct 623 ms 10280 KB Output is correct
36 Correct 602 ms 10296 KB Output is correct
37 Correct 712 ms 10288 KB Output is correct
38 Correct 706 ms 10336 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 2432 KB Output is correct
2 Correct 11 ms 2432 KB Output is correct
3 Correct 8 ms 2432 KB Output is correct
4 Correct 8 ms 2432 KB Output is correct
5 Correct 10 ms 2432 KB Output is correct
6 Correct 11 ms 2432 KB Output is correct
7 Correct 9 ms 2432 KB Output is correct
8 Correct 11 ms 2432 KB Output is correct
9 Correct 12 ms 2432 KB Output is correct
10 Correct 10 ms 2432 KB Output is correct
11 Correct 9 ms 2380 KB Output is correct
12 Correct 8 ms 2432 KB Output is correct
13 Correct 10 ms 2432 KB Output is correct
14 Correct 9 ms 2432 KB Output is correct
15 Correct 9 ms 2432 KB Output is correct
16 Correct 6 ms 1792 KB Output is correct
17 Correct 6 ms 1664 KB Output is correct
18 Correct 6 ms 1664 KB Output is correct
19 Correct 5 ms 1664 KB Output is correct
20 Correct 6 ms 1664 KB Output is correct

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 670 ms 10332 KB Output is correct
2 Correct 721 ms 10220 KB Output is correct
3 Correct 770 ms 10276 KB Output is correct
4 Correct 687 ms 10492 KB Output is correct
5 Correct 706 ms 10232 KB Output is correct
6 Correct 1166 ms 10492 KB Output is correct
7 Correct 1146 ms 10552 KB Output is correct
8 Correct 1036 ms 10536 KB Output is correct
9 Correct 923 ms 10336 KB Output is correct
10 Correct 1045 ms 10520 KB Output is correct
11 Correct 1096 ms 10352 KB Output is correct
12 Correct 1010 ms 10316 KB Output is correct
13 Correct 989 ms 10436 KB Output is correct
14 Correct 1010 ms 10528 KB Output is correct
15 Correct 1085 ms 10476 KB Output is correct
16 Correct 85 ms 3704 KB Output is correct
17 Correct 73 ms 3896 KB Output is correct
18 Correct 84 ms 3764 KB Output is correct
19 Correct 64 ms 3844 KB Output is correct
20 Correct 80 ms 3820 KB Output is correct
21 Correct 890 ms 10836 KB Output is correct
22 Correct 853 ms 10916 KB Output is correct
23 Correct 699 ms 10492 KB Output is correct
24 Correct 959 ms 10492 KB Output is correct
25 Correct 811 ms 10744 KB Output is correct
26 Correct 1557 ms 11256 KB Output is correct
27 Correct 1840 ms 11336 KB Output is correct
28 Correct 1721 ms 11340 KB Output is correct
29 Correct 1635 ms 11144 KB Output is correct
30 Correct 941 ms 10356 KB Output is correct
31 Correct 1002 ms 10412 KB Output is correct
32 Correct 961 ms 10500 KB Output is correct
33 Correct 853 ms 10432 KB Output is correct
34 Correct 858 ms 10216 KB Output is correct
35 Correct 623 ms 10280 KB Output is correct
36 Correct 602 ms 10296 KB Output is correct
37 Correct 712 ms 10288 KB Output is correct
38 Correct 706 ms 10336 KB Output is correct
39 Correct 9 ms 2432 KB Output is correct
40 Correct 11 ms 2432 KB Output is correct
41 Correct 8 ms 2432 KB Output is correct
42 Correct 8 ms 2432 KB Output is correct
43 Correct 10 ms 2432 KB Output is correct
44 Correct 11 ms 2432 KB Output is correct
45 Correct 9 ms 2432 KB Output is correct
46 Correct 11 ms 2432 KB Output is correct
47 Correct 12 ms 2432 KB Output is correct
48 Correct 10 ms 2432 KB Output is correct
49 Correct 9 ms 2380 KB Output is correct
50 Correct 8 ms 2432 KB Output is correct
51 Correct 10 ms 2432 KB Output is correct
52 Correct 9 ms 2432 KB Output is correct
53 Correct 9 ms 2432 KB Output is correct
54 Correct 6 ms 1792 KB Output is correct
55 Correct 6 ms 1664 KB Output is correct
56 Correct 6 ms 1664 KB Output is correct
57 Correct 5 ms 1664 KB Output is correct
58 Correct 6 ms 1664 KB Output is correct
59 Correct 1331 ms 11568 KB Output is correct
60 Correct 1235 ms 11356 KB Output is correct
61 Correct 1152 ms 11512 KB Output is correct
62 Correct 1357 ms 11484 KB Output is correct
63 Correct 1270 ms 11508 KB Output is correct
64 Execution timed out 2021 ms 12248 KB Time limit exceeded
65 Halted 0 ms 0 KB -