oj.uz

답안 #30814

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
30814 2017-07-27T02:35:44 Z TAMREF 스트랩 (JOI14_straps) C++11
50 / 100
 946 ms 262144 KB 
#include <bits/stdc++.h>
#define ilb INT_MIN
using namespace std;
unordered_map<int,int> dp[2005], vis[2005];
pair<int,int> f[2005];
int N;
void input(){
    scanf("%d",&N);
    for(int i=0;i<N;i++) scanf("%d %d",&f[i].first,&f[i].second);
    sort(f,f+N,greater<pair<int,int>>());
    dp[0][1]=0;
}
void work_dp(){
    for(int i=0;i<N;i++){
        for(auto x : dp[i]){
            if(!vis[i+1][x.first]){
                dp[i+1][x.first]=ilb;
                vis[i+1][x.first]=1;
            }
            dp[i+1][x.first]=max(dp[i+1][x.first],x.second);
            if(!x.first) continue;
            if(!vis[i+1][x.first+f[i].first-1]){
                dp[i+1][x.first+f[i].first-1]=ilb;
                vis[i+1][x.first+f[i].first-1]=1;
            }
            dp[i+1][x.first+f[i].first-1]=max(dp[i+1][x.first+f[i].first-1],x.second+f[i].second);
        }
    }
}
void output(){
    int t=0;
    for(auto x : dp[N]) t=max(t,x.second);
    printf("%d\n",t);
}
int main(){
    input();
    work_dp();
    output();
}

Compilation message

straps.cpp: In function 'void input()':
straps.cpp:8:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
                   ^
straps.cpp:9:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<N;i++) scanf("%d %d",&f[i].first,&f[i].second);
                                                                 ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2260 KB Output is correct
2 Correct 0 ms 2260 KB Output is correct
3 Correct 0 ms 2260 KB Output is correct
4 Correct 0 ms 2260 KB Output is correct
5 Correct 0 ms 2260 KB Output is correct
6 Correct 0 ms 2260 KB Output is correct
7 Correct 0 ms 2260 KB Output is correct
8 Correct 0 ms 2260 KB Output is correct
9 Correct 0 ms 2260 KB Output is correct
10 Correct 0 ms 2260 KB Output is correct
11 Correct 0 ms 2260 KB Output is correct
12 Correct 0 ms 2260 KB Output is correct
13 Correct 0 ms 2260 KB Output is correct
14 Correct 0 ms 2260 KB Output is correct
15 Correct 0 ms 2260 KB Output is correct
16 Correct 0 ms 2260 KB Output is correct
17 Correct 0 ms 2260 KB Output is correct
18 Correct 0 ms 2260 KB Output is correct
19 Correct 0 ms 2260 KB Output is correct
20 Correct 0 ms 2260 KB Output is correct
21 Correct 0 ms 2260 KB Output is correct
22 Correct 0 ms 2260 KB Output is correct
23 Correct 0 ms 2260 KB Output is correct
24 Correct 0 ms 2392 KB Output is correct
25 Correct 0 ms 2392 KB Output is correct

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2260 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 0 ms 2524 KB Output is correct
6 Correct 0 ms 2392 KB Output is correct
7 Correct 0 ms 2524 KB Output is correct
8 Correct 49 ms 14932 KB Output is correct
9 Correct 49 ms 14008 KB Output is correct
10 Correct 73 ms 20080 KB Output is correct
11 Correct 53 ms 15460 KB Output is correct
12 Correct 209 ms 47008 KB Output is correct
13 Correct 196 ms 50440 KB Output is correct
14 Correct 253 ms 59020 KB Output is correct
15 Correct 193 ms 49252 KB Output is correct
16 Correct 213 ms 49648 KB Output is correct
17 Correct 266 ms 51100 KB Output is correct
18 Correct 216 ms 47272 KB Output is correct
19 Correct 719 ms 181028 KB Output is correct
20 Correct 946 ms 199956 KB Output is correct
21 Memory limit exceeded 779 ms 262144 KB Memory limit exceeded
22 Halted 0 ms 0 KB -

Subtask #3
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2524 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 0 ms 2524 KB Output is correct
6 Correct 0 ms 2524 KB Output is correct
7 Correct 0 ms 2392 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 69 ms 14536 KB Output is correct
10 Correct 56 ms 14536 KB Output is correct
11 Correct 59 ms 12952 KB Output is correct
12 Correct 59 ms 13480 KB Output is correct
13 Correct 83 ms 20344 KB Output is correct
14 Correct 89 ms 15988 KB Output is correct
15 Correct 66 ms 14536 KB Output is correct
16 Correct 63 ms 15196 KB Output is correct
17 Correct 243 ms 50044 KB Output is correct
18 Correct 196 ms 48196 KB Output is correct
19 Correct 209 ms 45556 KB Output is correct
20 Correct 166 ms 41992 KB Output is correct
21 Correct 336 ms 72484 KB Output is correct
22 Correct 276 ms 74124 KB Output is correct
23 Correct 199 ms 49384 KB Output is correct
24 Correct 209 ms 51496 KB Output is correct
25 Correct 209 ms 53344 KB Output is correct
26 Correct 199 ms 45292 KB Output is correct
27 Correct 173 ms 40408 KB Output is correct
28 Correct 186 ms 44632 KB Output is correct
29 Correct 339 ms 79904 KB Output is correct
30 Correct 156 ms 41992 KB Output is correct
31 Correct 206 ms 47008 KB Output is correct
32 Correct 269 ms 57832 KB Output is correct
33 Correct 796 ms 174792 KB Output is correct

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 659 ms 162816 KB Output is correct
2 Correct 733 ms 161216 KB Output is correct
3 Correct 756 ms 191940 KB Output is correct
4 Correct 489 ms 112296 KB Output is correct
5 Memory limit exceeded 879 ms 262144 KB Memory limit exceeded
6 Halted 0 ms 0 KB -