답안 #400058

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
400058	2021-05-07T09:34:45 Z	juggernaut	Boat (APIO16_boat)	C++17	100 / 100	1444 ms	4296 KB

boat

#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
typedef long long ll;
#define USING_ORDERED_SET 0
#if USING_ORDERED_SET
#include<bits/extc++.h>
using namespace __gnu_pbds;
template<class T>using ordered_set=tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
#endif
template<class T>void umax(T &a,T b){if(a<b)a=b;}
template<class T>void umin(T &a,T b){if(b<a)a=b;}
#ifdef IOI2021SG
    #define printl(args...)printf(args)
#else
    #define printl(args...)
#endif
#define mod 1000000007
vector<int>aux;
array<int,2>v[505];
ll dp[1005][505],inv[505];
int main(){
    int n,i,j,e;
    scanf("%d",&n);
    aux={-1};
    inv[1]=1;
    for(i=2;i<=n;i++)
        inv[i]=(mod-mod/i)*inv[mod%i]%mod;
    for(i=1;i<=n;i++){
        scanf("%d%d",&v[i][0],&v[i][1]);
        ++v[i][1];
        aux.push_back(v[i][0]);
        aux.push_back(v[i][1]);
    }
    sort(aux.begin(),aux.end());
    aux.resize(unique(aux.begin(),aux.end())-aux.begin());
    int m=aux.size();
    for(i=0;i<m;i++)
        dp[i][0]=1;
    for(i=1;i<=n;i++){
        for(j=m-1;j>=1;j--)
            if (v[i][0]<=aux[j-1] && aux[j]<=v[i][1]){
                int cnt=aux[j]-aux[j-1];
                for(e=min(cnt,i);e>=1;e--)
                    dp[j][e]=(dp[j][e]+dp[j][e-1]*(cnt-e+1)%mod*inv[e])%mod;
            }
        for(j=1;j<=m;j++){
            dp[j][0]=0;
            for(e=0;e<=n;e++)
                dp[j][0]=(dp[j][0]+dp[j-1][e])%mod;
        }
    }
    printf("%lld\n",(dp[m][0]+mod-1)%mod);
}

Compilation message

boat.cpp: In function 'void usaco(std::string)':
boat.cpp:5:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boat.cpp:5:66: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    5 | void usaco(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
boat.cpp: In function 'int main()':
boat.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
boat.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |         scanf("%d%d",&v[i][0],&v[i][1]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1144 ms	4260 KB	Output is correct
2	Correct	1138 ms	4244 KB	Output is correct
3	Correct	1145 ms	4248 KB	Output is correct
4	Correct	1140 ms	4244 KB	Output is correct
5	Correct	1142 ms	4244 KB	Output is correct
6	Correct	1149 ms	4252 KB	Output is correct
7	Correct	1142 ms	4248 KB	Output is correct
8	Correct	1137 ms	4292 KB	Output is correct
9	Correct	1147 ms	4292 KB	Output is correct
10	Correct	1138 ms	4252 KB	Output is correct
11	Correct	1141 ms	4252 KB	Output is correct
12	Correct	1158 ms	4244 KB	Output is correct
13	Correct	1145 ms	4244 KB	Output is correct
14	Correct	1149 ms	4248 KB	Output is correct
15	Correct	1151 ms	4244 KB	Output is correct
16	Correct	203 ms	996 KB	Output is correct
17	Correct	222 ms	1048 KB	Output is correct
18	Correct	209 ms	1092 KB	Output is correct
19	Correct	221 ms	1048 KB	Output is correct
20	Correct	212 ms	1024 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1144 ms	4260 KB	Output is correct
2	Correct	1138 ms	4244 KB	Output is correct
3	Correct	1145 ms	4248 KB	Output is correct
4	Correct	1140 ms	4244 KB	Output is correct
5	Correct	1142 ms	4244 KB	Output is correct
6	Correct	1149 ms	4252 KB	Output is correct
7	Correct	1142 ms	4248 KB	Output is correct
8	Correct	1137 ms	4292 KB	Output is correct
9	Correct	1147 ms	4292 KB	Output is correct
10	Correct	1138 ms	4252 KB	Output is correct
11	Correct	1141 ms	4252 KB	Output is correct
12	Correct	1158 ms	4244 KB	Output is correct
13	Correct	1145 ms	4244 KB	Output is correct
14	Correct	1149 ms	4248 KB	Output is correct
15	Correct	1151 ms	4244 KB	Output is correct
16	Correct	203 ms	996 KB	Output is correct
17	Correct	222 ms	1048 KB	Output is correct
18	Correct	209 ms	1092 KB	Output is correct
19	Correct	221 ms	1048 KB	Output is correct
20	Correct	212 ms	1024 KB	Output is correct
21	Correct	1061 ms	3908 KB	Output is correct
22	Correct	1062 ms	3956 KB	Output is correct
23	Correct	1045 ms	3896 KB	Output is correct
24	Correct	1045 ms	3868 KB	Output is correct
25	Correct	1054 ms	3908 KB	Output is correct
26	Correct	1010 ms	3788 KB	Output is correct
27	Correct	1036 ms	3840 KB	Output is correct
28	Correct	1025 ms	3784 KB	Output is correct
29	Correct	1014 ms	3776 KB	Output is correct
30	Correct	1145 ms	4260 KB	Output is correct
31	Correct	1155 ms	4256 KB	Output is correct
32	Correct	1137 ms	4252 KB	Output is correct
33	Correct	1152 ms	4292 KB	Output is correct
34	Correct	1132 ms	4244 KB	Output is correct
35	Correct	1145 ms	4244 KB	Output is correct
36	Correct	1136 ms	4172 KB	Output is correct
37	Correct	1152 ms	4296 KB	Output is correct
38	Correct	1136 ms	4248 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	12 ms	1100 KB	Output is correct
2	Correct	12 ms	1108 KB	Output is correct
3	Correct	12 ms	1100 KB	Output is correct
4	Correct	12 ms	1100 KB	Output is correct
5	Correct	12 ms	1068 KB	Output is correct
6	Correct	13 ms	1112 KB	Output is correct
7	Correct	14 ms	1100 KB	Output is correct
8	Correct	13 ms	1228 KB	Output is correct
9	Correct	13 ms	1100 KB	Output is correct
10	Correct	13 ms	1100 KB	Output is correct
11	Correct	12 ms	1100 KB	Output is correct
12	Correct	12 ms	1104 KB	Output is correct
13	Correct	12 ms	1112 KB	Output is correct
14	Correct	12 ms	1100 KB	Output is correct
15	Correct	12 ms	1100 KB	Output is correct
16	Correct	7 ms	776 KB	Output is correct
17	Correct	7 ms	716 KB	Output is correct
18	Correct	7 ms	768 KB	Output is correct
19	Correct	7 ms	716 KB	Output is correct
20	Correct	7 ms	688 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1144 ms	4260 KB	Output is correct
2	Correct	1138 ms	4244 KB	Output is correct
3	Correct	1145 ms	4248 KB	Output is correct
4	Correct	1140 ms	4244 KB	Output is correct
5	Correct	1142 ms	4244 KB	Output is correct
6	Correct	1149 ms	4252 KB	Output is correct
7	Correct	1142 ms	4248 KB	Output is correct
8	Correct	1137 ms	4292 KB	Output is correct
9	Correct	1147 ms	4292 KB	Output is correct
10	Correct	1138 ms	4252 KB	Output is correct
11	Correct	1141 ms	4252 KB	Output is correct
12	Correct	1158 ms	4244 KB	Output is correct
13	Correct	1145 ms	4244 KB	Output is correct
14	Correct	1149 ms	4248 KB	Output is correct
15	Correct	1151 ms	4244 KB	Output is correct
16	Correct	203 ms	996 KB	Output is correct
17	Correct	222 ms	1048 KB	Output is correct
18	Correct	209 ms	1092 KB	Output is correct
19	Correct	221 ms	1048 KB	Output is correct
20	Correct	212 ms	1024 KB	Output is correct
21	Correct	1061 ms	3908 KB	Output is correct
22	Correct	1062 ms	3956 KB	Output is correct
23	Correct	1045 ms	3896 KB	Output is correct
24	Correct	1045 ms	3868 KB	Output is correct
25	Correct	1054 ms	3908 KB	Output is correct
26	Correct	1010 ms	3788 KB	Output is correct
27	Correct	1036 ms	3840 KB	Output is correct
28	Correct	1025 ms	3784 KB	Output is correct
29	Correct	1014 ms	3776 KB	Output is correct
30	Correct	1145 ms	4260 KB	Output is correct
31	Correct	1155 ms	4256 KB	Output is correct
32	Correct	1137 ms	4252 KB	Output is correct
33	Correct	1152 ms	4292 KB	Output is correct
34	Correct	1132 ms	4244 KB	Output is correct
35	Correct	1145 ms	4244 KB	Output is correct
36	Correct	1136 ms	4172 KB	Output is correct
37	Correct	1152 ms	4296 KB	Output is correct
38	Correct	1136 ms	4248 KB	Output is correct
39	Correct	12 ms	1100 KB	Output is correct
40	Correct	12 ms	1108 KB	Output is correct
41	Correct	12 ms	1100 KB	Output is correct
42	Correct	12 ms	1100 KB	Output is correct
43	Correct	12 ms	1068 KB	Output is correct
44	Correct	13 ms	1112 KB	Output is correct
45	Correct	14 ms	1100 KB	Output is correct
46	Correct	13 ms	1228 KB	Output is correct
47	Correct	13 ms	1100 KB	Output is correct
48	Correct	13 ms	1100 KB	Output is correct
49	Correct	12 ms	1100 KB	Output is correct
50	Correct	12 ms	1104 KB	Output is correct
51	Correct	12 ms	1112 KB	Output is correct
52	Correct	12 ms	1100 KB	Output is correct
53	Correct	12 ms	1100 KB	Output is correct
54	Correct	7 ms	776 KB	Output is correct
55	Correct	7 ms	716 KB	Output is correct
56	Correct	7 ms	768 KB	Output is correct
57	Correct	7 ms	716 KB	Output is correct
58	Correct	7 ms	688 KB	Output is correct
59	Correct	1346 ms	4272 KB	Output is correct
60	Correct	1331 ms	4292 KB	Output is correct
61	Correct	1318 ms	4260 KB	Output is correct
62	Correct	1335 ms	4260 KB	Output is correct
63	Correct	1334 ms	4264 KB	Output is correct
64	Correct	1441 ms	4256 KB	Output is correct
65	Correct	1444 ms	4260 KB	Output is correct
66	Correct	1432 ms	4292 KB	Output is correct
67	Correct	1428 ms	4276 KB	Output is correct
68	Correct	1422 ms	4260 KB	Output is correct
69	Correct	1298 ms	4172 KB	Output is correct
70	Correct	1283 ms	4292 KB	Output is correct
71	Correct	1315 ms	4256 KB	Output is correct
72	Correct	1289 ms	4260 KB	Output is correct
73	Correct	1301 ms	4256 KB	Output is correct
74	Correct	231 ms	1040 KB	Output is correct
75	Correct	231 ms	1052 KB	Output is correct
76	Correct	236 ms	1040 KB	Output is correct
77	Correct	229 ms	1032 KB	Output is correct
78	Correct	227 ms	1024 KB	Output is correct

답안 #400058

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 22.0 / 22.0

Subtask #3 27.0 / 27.0

Subtask #4 42.0 / 42.0

Subtask #1
9.0 / 9.0

Subtask #2
22.0 / 22.0

Subtask #3
27.0 / 27.0

Subtask #4
42.0 / 42.0