답안 #46856 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
46856	2018-04-24T01:43:29 Z	ffresh	스트랩 (JOI14_straps)	C++17	100 / 100	13 ms	760 KB

straps

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int N = 2005,inf = -2e9-150;

int dp[N];

pair<int,int> inp[N];
int main(){
    //freopen("input.txt","r",stdin);

    int n;
    scanf("%d",&n);

    int a,b,ret=0;
    
    for(int i=0;i<N;++i)dp[i]= inf;
    dp[1]= 0;
    
    for(int i=0;i<n;++i){
        scanf("%d%d",&inp[i].first,&inp[i].second);
    }
    sort(inp,inp+n,greater<pair<int,int> >());

    for(int i=0;i<n;++i){
        int x = inp[i].first-1, y = inp[i].second;

        if(x<0){
            for(int j=1;j<=n;++j)
                if(dp[j]!=inf)dp[j-1]= max(dp[j-1],dp[j]+y);
        }
        else{
            for(int j=n;j>=1;--j){
                int nj = min(n,j+x);
                if(dp[j]!=inf)
                    dp[nj]= max(dp[nj], dp[j] + y);
            }
        }
    }

    for(int i=0;i<=n;++i)ret= max(ret,dp[i]);
    printf("%d\n",ret);
    return 0;
}

Compilation message

straps.cpp: In function 'int main()':
straps.cpp:18:9: warning: unused variable 'a' [-Wunused-variable]
     int a,b,ret=0;
         ^
straps.cpp:18:11: warning: unused variable 'b' [-Wunused-variable]
     int a,b,ret=0;
           ^
straps.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
straps.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&inp[i].first,&inp[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	244 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	2 ms	576 KB	Output is correct
5	Correct	2 ms	576 KB	Output is correct
6	Correct	2 ms	624 KB	Output is correct
7	Correct	2 ms	624 KB	Output is correct
8	Correct	2 ms	624 KB	Output is correct
9	Correct	2 ms	740 KB	Output is correct
10	Correct	2 ms	740 KB	Output is correct
11	Correct	2 ms	740 KB	Output is correct
12	Correct	2 ms	740 KB	Output is correct
13	Correct	2 ms	740 KB	Output is correct
14	Correct	2 ms	740 KB	Output is correct
15	Correct	2 ms	740 KB	Output is correct
16	Correct	2 ms	740 KB	Output is correct
17	Correct	2 ms	740 KB	Output is correct
18	Correct	2 ms	740 KB	Output is correct
19	Correct	2 ms	740 KB	Output is correct
20	Correct	2 ms	740 KB	Output is correct
21	Correct	2 ms	740 KB	Output is correct
22	Correct	2 ms	740 KB	Output is correct
23	Correct	2 ms	740 KB	Output is correct
24	Correct	2 ms	740 KB	Output is correct
25	Correct	2 ms	740 KB	Output is correct

Subtask #2
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	740 KB	Output is correct
2	Correct	2 ms	740 KB	Output is correct
3	Correct	2 ms	740 KB	Output is correct
4	Correct	2 ms	740 KB	Output is correct
5	Correct	2 ms	740 KB	Output is correct
6	Correct	2 ms	740 KB	Output is correct
7	Correct	2 ms	740 KB	Output is correct
8	Correct	3 ms	740 KB	Output is correct
9	Correct	3 ms	740 KB	Output is correct
10	Correct	3 ms	740 KB	Output is correct
11	Correct	3 ms	740 KB	Output is correct
12	Correct	6 ms	740 KB	Output is correct
13	Correct	6 ms	740 KB	Output is correct
14	Correct	6 ms	740 KB	Output is correct
15	Correct	6 ms	740 KB	Output is correct
16	Correct	7 ms	740 KB	Output is correct
17	Correct	7 ms	740 KB	Output is correct
18	Correct	7 ms	740 KB	Output is correct
19	Correct	6 ms	740 KB	Output is correct
20	Correct	6 ms	740 KB	Output is correct
21	Correct	7 ms	740 KB	Output is correct
22	Correct	6 ms	752 KB	Output is correct
23	Correct	7 ms	752 KB	Output is correct
24	Correct	6 ms	752 KB	Output is correct
25	Correct	7 ms	752 KB	Output is correct
26	Correct	7 ms	752 KB	Output is correct
27	Correct	7 ms	752 KB	Output is correct
28	Correct	7 ms	752 KB	Output is correct
29	Correct	13 ms	752 KB	Output is correct
30	Correct	12 ms	752 KB	Output is correct
31	Correct	9 ms	752 KB	Output is correct

Subtask #3
45.0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	752 KB	Output is correct
2	Correct	2 ms	752 KB	Output is correct
3	Correct	2 ms	752 KB	Output is correct
4	Correct	2 ms	752 KB	Output is correct
5	Correct	2 ms	752 KB	Output is correct
6	Correct	2 ms	752 KB	Output is correct
7	Correct	2 ms	752 KB	Output is correct
8	Correct	2 ms	752 KB	Output is correct
9	Correct	4 ms	752 KB	Output is correct
10	Correct	3 ms	752 KB	Output is correct
11	Correct	3 ms	752 KB	Output is correct
12	Correct	3 ms	752 KB	Output is correct
13	Correct	3 ms	752 KB	Output is correct
14	Correct	3 ms	752 KB	Output is correct
15	Correct	3 ms	752 KB	Output is correct
16	Correct	4 ms	752 KB	Output is correct
17	Correct	6 ms	752 KB	Output is correct
18	Correct	6 ms	752 KB	Output is correct
19	Correct	6 ms	752 KB	Output is correct
20	Correct	6 ms	752 KB	Output is correct
21	Correct	6 ms	752 KB	Output is correct
22	Correct	6 ms	752 KB	Output is correct
23	Correct	8 ms	752 KB	Output is correct
24	Correct	6 ms	752 KB	Output is correct
25	Correct	6 ms	752 KB	Output is correct
26	Correct	6 ms	760 KB	Output is correct
27	Correct	10 ms	760 KB	Output is correct
28	Correct	6 ms	760 KB	Output is correct
29	Correct	6 ms	760 KB	Output is correct
30	Correct	6 ms	760 KB	Output is correct
31	Correct	6 ms	760 KB	Output is correct
32	Correct	9 ms	760 KB	Output is correct
33	Correct	7 ms	760 KB	Output is correct

Subtask #4
45.0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	760 KB	Output is correct
2	Correct	6 ms	760 KB	Output is correct
3	Correct	6 ms	760 KB	Output is correct
4	Correct	6 ms	760 KB	Output is correct
5	Correct	7 ms	760 KB	Output is correct
6	Correct	7 ms	760 KB	Output is correct
7	Correct	11 ms	760 KB	Output is correct
8	Correct	7 ms	760 KB	Output is correct
9	Correct	7 ms	760 KB	Output is correct
10	Correct	7 ms	760 KB	Output is correct
11	Correct	10 ms	760 KB	Output is correct
12	Correct	11 ms	760 KB	Output is correct
13	Correct	7 ms	760 KB	Output is correct
14	Correct	10 ms	760 KB	Output is correct
15	Correct	7 ms	760 KB	Output is correct
16	Correct	6 ms	760 KB	Output is correct
17	Correct	7 ms	760 KB	Output is correct
18	Correct	8 ms	760 KB	Output is correct
19	Correct	9 ms	760 KB	Output is correct
20	Correct	10 ms	760 KB	Output is correct
21	Correct	9 ms	760 KB	Output is correct
22	Correct	10 ms	760 KB	Output is correct
23	Correct	9 ms	760 KB	Output is correct
24	Correct	8 ms	760 KB	Output is correct
25	Correct	6 ms	760 KB	Output is correct

답안 #46856

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 5.0 / 5.0

Subtask #3 45.0 / 45.0

Subtask #4 45.0 / 45.0

Subtask #1
5.0 / 5.0

Subtask #2
5.0 / 5.0

Subtask #3
45.0 / 45.0

Subtask #4
45.0 / 45.0