oj.uz

Submission #108407

# Submission time Handle Problem Language Result Execution time Memory
108407 2019-04-29T06:43:42 Z nxteru Boat (APIO16_boat) C++14
58 / 100
 2000 ms 12288 KB 
#include <bits/stdc++.h>
#pragma GCC target ("avx2")
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:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=1;j<cm.size();j++){
               ~^~~~~~~~~~
boat.cpp:31:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1;i<cm.size();i++){
              ~^~~~~~~~~~
boat.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
     ~~~~~^~~~~~~~~~~
boat.cpp:14:8: 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 539 ms 10108 KB Output is correct
2 Correct 712 ms 10232 KB Output is correct
3 Correct 642 ms 10172 KB Output is correct
4 Correct 584 ms 10320 KB Output is correct
5 Correct 618 ms 10424 KB Output is correct
6 Correct 839 ms 10204 KB Output is correct
7 Correct 781 ms 10364 KB Output is correct
8 Correct 829 ms 10344 KB Output is correct
9 Correct 737 ms 10408 KB Output is correct
10 Correct 988 ms 10400 KB Output is correct
11 Correct 1000 ms 10364 KB Output is correct
12 Correct 949 ms 10312 KB Output is correct
13 Correct 1057 ms 10360 KB Output is correct
14 Correct 1073 ms 10452 KB Output is correct
15 Correct 1022 ms 10244 KB Output is correct
16 Correct 66 ms 3704 KB Output is correct
17 Correct 81 ms 3824 KB Output is correct
18 Correct 74 ms 3832 KB Output is correct
19 Correct 67 ms 3832 KB Output is correct
20 Correct 68 ms 3832 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 539 ms 10108 KB Output is correct
2 Correct 712 ms 10232 KB Output is correct
3 Correct 642 ms 10172 KB Output is correct
4 Correct 584 ms 10320 KB Output is correct
5 Correct 618 ms 10424 KB Output is correct
6 Correct 839 ms 10204 KB Output is correct
7 Correct 781 ms 10364 KB Output is correct
8 Correct 829 ms 10344 KB Output is correct
9 Correct 737 ms 10408 KB Output is correct
10 Correct 988 ms 10400 KB Output is correct
11 Correct 1000 ms 10364 KB Output is correct
12 Correct 949 ms 10312 KB Output is correct
13 Correct 1057 ms 10360 KB Output is correct
14 Correct 1073 ms 10452 KB Output is correct
15 Correct 1022 ms 10244 KB Output is correct
16 Correct 66 ms 3704 KB Output is correct
17 Correct 81 ms 3824 KB Output is correct
18 Correct 74 ms 3832 KB Output is correct
19 Correct 67 ms 3832 KB Output is correct
20 Correct 68 ms 3832 KB Output is correct
21 Correct 941 ms 10624 KB Output is correct
22 Correct 932 ms 10744 KB Output is correct
23 Correct 880 ms 10616 KB Output is correct
24 Correct 1135 ms 10588 KB Output is correct
25 Correct 1059 ms 10576 KB Output is correct
26 Correct 1695 ms 11176 KB Output is correct
27 Correct 1821 ms 11288 KB Output is correct
28 Correct 1708 ms 11112 KB Output is correct
29 Correct 1558 ms 11040 KB Output is correct
30 Correct 981 ms 10324 KB Output is correct
31 Correct 965 ms 10360 KB Output is correct
32 Correct 847 ms 10360 KB Output is correct
33 Correct 1068 ms 10360 KB Output is correct
34 Correct 943 ms 10360 KB Output is correct
35 Correct 660 ms 10360 KB Output is correct
36 Correct 616 ms 10432 KB Output is correct
37 Correct 542 ms 10360 KB Output is correct
38 Correct 596 ms 10212 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 10 ms 2304 KB Output is correct
3 Correct 8 ms 2304 KB Output is correct
4 Correct 8 ms 2304 KB Output is correct
5 Correct 8 ms 2304 KB Output is correct
6 Correct 9 ms 2432 KB Output is correct
7 Correct 9 ms 2432 KB Output is correct
8 Correct 9 ms 2432 KB Output is correct
9 Correct 9 ms 2432 KB Output is correct
10 Correct 9 ms 2432 KB Output is correct
11 Correct 11 ms 2432 KB Output is correct
12 Correct 10 ms 2432 KB Output is correct
13 Correct 9 ms 2432 KB Output is correct
14 Correct 8 ms 2432 KB Output is correct
15 Correct 8 ms 2432 KB Output is correct
16 Correct 5 ms 1792 KB Output is correct
17 Correct 5 ms 1664 KB Output is correct
18 Correct 6 ms 1664 KB Output is correct
19 Correct 11 ms 1664 KB Output is correct
20 Correct 5 ms 1664 KB Output is correct

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 539 ms 10108 KB Output is correct
2 Correct 712 ms 10232 KB Output is correct
3 Correct 642 ms 10172 KB Output is correct
4 Correct 584 ms 10320 KB Output is correct
5 Correct 618 ms 10424 KB Output is correct
6 Correct 839 ms 10204 KB Output is correct
7 Correct 781 ms 10364 KB Output is correct
8 Correct 829 ms 10344 KB Output is correct
9 Correct 737 ms 10408 KB Output is correct
10 Correct 988 ms 10400 KB Output is correct
11 Correct 1000 ms 10364 KB Output is correct
12 Correct 949 ms 10312 KB Output is correct
13 Correct 1057 ms 10360 KB Output is correct
14 Correct 1073 ms 10452 KB Output is correct
15 Correct 1022 ms 10244 KB Output is correct
16 Correct 66 ms 3704 KB Output is correct
17 Correct 81 ms 3824 KB Output is correct
18 Correct 74 ms 3832 KB Output is correct
19 Correct 67 ms 3832 KB Output is correct
20 Correct 68 ms 3832 KB Output is correct
21 Correct 941 ms 10624 KB Output is correct
22 Correct 932 ms 10744 KB Output is correct
23 Correct 880 ms 10616 KB Output is correct
24 Correct 1135 ms 10588 KB Output is correct
25 Correct 1059 ms 10576 KB Output is correct
26 Correct 1695 ms 11176 KB Output is correct
27 Correct 1821 ms 11288 KB Output is correct
28 Correct 1708 ms 11112 KB Output is correct
29 Correct 1558 ms 11040 KB Output is correct
30 Correct 981 ms 10324 KB Output is correct
31 Correct 965 ms 10360 KB Output is correct
32 Correct 847 ms 10360 KB Output is correct
33 Correct 1068 ms 10360 KB Output is correct
34 Correct 943 ms 10360 KB Output is correct
35 Correct 660 ms 10360 KB Output is correct
36 Correct 616 ms 10432 KB Output is correct
37 Correct 542 ms 10360 KB Output is correct
38 Correct 596 ms 10212 KB Output is correct
39 Correct 9 ms 2432 KB Output is correct
40 Correct 10 ms 2304 KB Output is correct
41 Correct 8 ms 2304 KB Output is correct
42 Correct 8 ms 2304 KB Output is correct
43 Correct 8 ms 2304 KB Output is correct
44 Correct 9 ms 2432 KB Output is correct
45 Correct 9 ms 2432 KB Output is correct
46 Correct 9 ms 2432 KB Output is correct
47 Correct 9 ms 2432 KB Output is correct
48 Correct 9 ms 2432 KB Output is correct
49 Correct 11 ms 2432 KB Output is correct
50 Correct 10 ms 2432 KB Output is correct
51 Correct 9 ms 2432 KB Output is correct
52 Correct 8 ms 2432 KB Output is correct
53 Correct 8 ms 2432 KB Output is correct
54 Correct 5 ms 1792 KB Output is correct
55 Correct 5 ms 1664 KB Output is correct
56 Correct 6 ms 1664 KB Output is correct
57 Correct 11 ms 1664 KB Output is correct
58 Correct 5 ms 1664 KB Output is correct
59 Correct 1083 ms 11612 KB Output is correct
60 Correct 1016 ms 11424 KB Output is correct
61 Correct 1016 ms 11384 KB Output is correct
62 Correct 1266 ms 11400 KB Output is correct
63 Correct 1084 ms 11480 KB Output is correct
64 Correct 1894 ms 12252 KB Output is correct
65 Correct 1506 ms 12256 KB Output is correct
66 Correct 1942 ms 12288 KB Output is correct
67 Execution timed out 2025 ms 12152 KB Time limit exceeded
68 Halted 0 ms 0 KB -