답안 #50352 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
50352	2018-06-10T17:37:47 Z	duality	Boat (APIO16_boat)	C++11	100 / 100	877 ms	5256 KB

boat

#include <bits/stdc++.h>
using namespace std;

// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------
#define MOD 1000000007

int a[500],b[500];
vi l;
LLI inv[501];
LLI dp[500][1000];
int main() {
    int i;
    int N;
    scanf("%d",&N);
    for (i = 0; i < N; i++) scanf("%d %d",&a[i],&b[i]),b[i]++,l.push_back(a[i]),l.push_back(b[i]);
    l.push_back(-1);
    sort(l.begin(),l.end());
    l.resize(unique(l.begin(),l.end())-l.begin());

    int j,k;
    int s = 0,x;
    LLI w;
    for (i = 1; i <= N; i++) {
        int e = MOD-2;
        LLI r = 1,b = i;
        while (e > 0) {
            if (e & 1) r *= b,r %= MOD;
            e >>= 1;
            b *= b,b %= MOD;
        }
        inv[i] = r;
    }
    for (i = 0; i < N; i++) {
        for (j = 1; j < (l.size()-1); j++) {
            w = 1,x = 0;
            dp[i][j] = dp[i][j-1];
            for (k = i; k >= 0; k--) {
                if ((l[j] >= a[k]) && (l[j+1] <= b[k])) {
                    w *= l[j+1]-l[j]+x,w %= MOD;
                    w *= inv[x+1],w %= MOD;
                    x++;
                }
                else if (k == i) break;
                if (k == 0) dp[i][j] += w;
                else dp[i][j] += w*dp[k-1][j-1];
                dp[i][j] %= MOD;
            }
        }
        s += dp[i][l.size()-2],s %= MOD;
    }
    printf("%d\n",s);

    return 0;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 1; j < (l.size()-1); j++) {
                     ~~^~~~~~~~~~~~~~
boat.cpp:52:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
boat.cpp:53:80: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < N; i++) scanf("%d %d",&a[i],&b[i]),b[i]++,l.push_back(a[i]),l.push_back(b[i]);
                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4216 KB	Output is correct
2	Correct	7 ms	4360 KB	Output is correct
3	Correct	7 ms	4384 KB	Output is correct
4	Correct	7 ms	4416 KB	Output is correct
5	Correct	6 ms	4416 KB	Output is correct
6	Correct	7 ms	4416 KB	Output is correct
7	Correct	7 ms	4416 KB	Output is correct
8	Correct	7 ms	4416 KB	Output is correct
9	Correct	9 ms	4416 KB	Output is correct
10	Correct	7 ms	4416 KB	Output is correct
11	Correct	7 ms	4416 KB	Output is correct
12	Correct	7 ms	4416 KB	Output is correct
13	Correct	6 ms	4432 KB	Output is correct
14	Correct	8 ms	4476 KB	Output is correct
15	Correct	7 ms	4476 KB	Output is correct
16	Correct	6 ms	4476 KB	Output is correct
17	Correct	7 ms	4476 KB	Output is correct
18	Correct	6 ms	4476 KB	Output is correct
19	Correct	6 ms	4476 KB	Output is correct
20	Correct	7 ms	4476 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4216 KB	Output is correct
2	Correct	7 ms	4360 KB	Output is correct
3	Correct	7 ms	4384 KB	Output is correct
4	Correct	7 ms	4416 KB	Output is correct
5	Correct	6 ms	4416 KB	Output is correct
6	Correct	7 ms	4416 KB	Output is correct
7	Correct	7 ms	4416 KB	Output is correct
8	Correct	7 ms	4416 KB	Output is correct
9	Correct	9 ms	4416 KB	Output is correct
10	Correct	7 ms	4416 KB	Output is correct
11	Correct	7 ms	4416 KB	Output is correct
12	Correct	7 ms	4416 KB	Output is correct
13	Correct	6 ms	4432 KB	Output is correct
14	Correct	8 ms	4476 KB	Output is correct
15	Correct	7 ms	4476 KB	Output is correct
16	Correct	6 ms	4476 KB	Output is correct
17	Correct	7 ms	4476 KB	Output is correct
18	Correct	6 ms	4476 KB	Output is correct
19	Correct	6 ms	4476 KB	Output is correct
20	Correct	7 ms	4476 KB	Output is correct
21	Correct	362 ms	4476 KB	Output is correct
22	Correct	362 ms	4604 KB	Output is correct
23	Correct	302 ms	4604 KB	Output is correct
24	Correct	391 ms	4668 KB	Output is correct
25	Correct	322 ms	4668 KB	Output is correct
26	Correct	651 ms	4744 KB	Output is correct
27	Correct	653 ms	4776 KB	Output is correct
28	Correct	662 ms	4852 KB	Output is correct
29	Correct	684 ms	4852 KB	Output is correct
30	Correct	9 ms	4852 KB	Output is correct
31	Correct	10 ms	4852 KB	Output is correct
32	Correct	9 ms	4852 KB	Output is correct
33	Correct	9 ms	4852 KB	Output is correct
34	Correct	9 ms	4852 KB	Output is correct
35	Correct	11 ms	4852 KB	Output is correct
36	Correct	11 ms	4852 KB	Output is correct
37	Correct	10 ms	4852 KB	Output is correct
38	Correct	11 ms	4852 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4852 KB	Output is correct
2	Correct	5 ms	4852 KB	Output is correct
3	Correct	5 ms	4852 KB	Output is correct
4	Correct	5 ms	4852 KB	Output is correct
5	Correct	6 ms	4852 KB	Output is correct
6	Correct	9 ms	4852 KB	Output is correct
7	Correct	8 ms	4852 KB	Output is correct
8	Correct	8 ms	4852 KB	Output is correct
9	Correct	9 ms	4852 KB	Output is correct
10	Correct	8 ms	4852 KB	Output is correct
11	Correct	5 ms	4852 KB	Output is correct
12	Correct	5 ms	4852 KB	Output is correct
13	Correct	5 ms	4852 KB	Output is correct
14	Correct	5 ms	4852 KB	Output is correct
15	Correct	5 ms	4852 KB	Output is correct
16	Correct	5 ms	4852 KB	Output is correct
17	Correct	4 ms	4852 KB	Output is correct
18	Correct	4 ms	4852 KB	Output is correct
19	Correct	4 ms	4852 KB	Output is correct
20	Correct	4 ms	4852 KB	Output is correct

Subtask #4
42.0 / 42.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	4216 KB	Output is correct
2	Correct	7 ms	4360 KB	Output is correct
3	Correct	7 ms	4384 KB	Output is correct
4	Correct	7 ms	4416 KB	Output is correct
5	Correct	6 ms	4416 KB	Output is correct
6	Correct	7 ms	4416 KB	Output is correct
7	Correct	7 ms	4416 KB	Output is correct
8	Correct	7 ms	4416 KB	Output is correct
9	Correct	9 ms	4416 KB	Output is correct
10	Correct	7 ms	4416 KB	Output is correct
11	Correct	7 ms	4416 KB	Output is correct
12	Correct	7 ms	4416 KB	Output is correct
13	Correct	6 ms	4432 KB	Output is correct
14	Correct	8 ms	4476 KB	Output is correct
15	Correct	7 ms	4476 KB	Output is correct
16	Correct	6 ms	4476 KB	Output is correct
17	Correct	7 ms	4476 KB	Output is correct
18	Correct	6 ms	4476 KB	Output is correct
19	Correct	6 ms	4476 KB	Output is correct
20	Correct	7 ms	4476 KB	Output is correct
21	Correct	362 ms	4476 KB	Output is correct
22	Correct	362 ms	4604 KB	Output is correct
23	Correct	302 ms	4604 KB	Output is correct
24	Correct	391 ms	4668 KB	Output is correct
25	Correct	322 ms	4668 KB	Output is correct
26	Correct	651 ms	4744 KB	Output is correct
27	Correct	653 ms	4776 KB	Output is correct
28	Correct	662 ms	4852 KB	Output is correct
29	Correct	684 ms	4852 KB	Output is correct
30	Correct	9 ms	4852 KB	Output is correct
31	Correct	10 ms	4852 KB	Output is correct
32	Correct	9 ms	4852 KB	Output is correct
33	Correct	9 ms	4852 KB	Output is correct
34	Correct	9 ms	4852 KB	Output is correct
35	Correct	11 ms	4852 KB	Output is correct
36	Correct	11 ms	4852 KB	Output is correct
37	Correct	10 ms	4852 KB	Output is correct
38	Correct	11 ms	4852 KB	Output is correct
39	Correct	6 ms	4852 KB	Output is correct
40	Correct	5 ms	4852 KB	Output is correct
41	Correct	5 ms	4852 KB	Output is correct
42	Correct	5 ms	4852 KB	Output is correct
43	Correct	6 ms	4852 KB	Output is correct
44	Correct	9 ms	4852 KB	Output is correct
45	Correct	8 ms	4852 KB	Output is correct
46	Correct	8 ms	4852 KB	Output is correct
47	Correct	9 ms	4852 KB	Output is correct
48	Correct	8 ms	4852 KB	Output is correct
49	Correct	5 ms	4852 KB	Output is correct
50	Correct	5 ms	4852 KB	Output is correct
51	Correct	5 ms	4852 KB	Output is correct
52	Correct	5 ms	4852 KB	Output is correct
53	Correct	5 ms	4852 KB	Output is correct
54	Correct	5 ms	4852 KB	Output is correct
55	Correct	4 ms	4852 KB	Output is correct
56	Correct	4 ms	4852 KB	Output is correct
57	Correct	4 ms	4852 KB	Output is correct
58	Correct	4 ms	4852 KB	Output is correct
59	Correct	375 ms	4940 KB	Output is correct
60	Correct	348 ms	4940 KB	Output is correct
61	Correct	399 ms	5096 KB	Output is correct
62	Correct	406 ms	5096 KB	Output is correct
63	Correct	443 ms	5096 KB	Output is correct
64	Correct	816 ms	5124 KB	Output is correct
65	Correct	877 ms	5124 KB	Output is correct
66	Correct	813 ms	5164 KB	Output is correct
67	Correct	762 ms	5256 KB	Output is correct
68	Correct	746 ms	5256 KB	Output is correct
69	Correct	304 ms	5256 KB	Output is correct
70	Correct	297 ms	5256 KB	Output is correct
71	Correct	309 ms	5256 KB	Output is correct
72	Correct	350 ms	5256 KB	Output is correct
73	Correct	342 ms	5256 KB	Output is correct
74	Correct	91 ms	5256 KB	Output is correct
75	Correct	74 ms	5256 KB	Output is correct
76	Correct	78 ms	5256 KB	Output is correct
77	Correct	76 ms	5256 KB	Output is correct
78	Correct	78 ms	5256 KB	Output is correct

답안 #50352

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