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답안 #157317

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
157317 2019-10-10T16:00:32 Z karma 스트랩 (JOI14_straps) C++14
50 / 100
 267 ms 157336 KB 
#include<bits/stdc++.h>
#define FileName      "test"
#define ll            long long
#define pb            emplace_back
#define deg           first
#define c             second

using namespace std;

typedef pair<int, int> pii;
const int N = int(2e3) + 2;
const int oo = int(2e9) + 7;

int f[N][N * 10], Max[N * 10], a[N];
int n, res = 0, pre, m;
pii val[N];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    if(fopen(FileName".inp", "r")) {
       freopen(FileName".inp", "r", stdin);
       freopen(FileName".out", "w", stdout);
    }

    cin >> n; m = 10 * n;
    for(int i = 1; i <= n; ++i) {
        cin >> val[i].deg >> val[i].c;
        fill(f[i], f[i] + m + 1, -oo);
    }
    sort(val + 1, val + n + 1, [](const pii& x, const pii& y) {
             return x.deg > y.deg;
         });
    /// f(i, j) = max niem vui khi den cai thu i va co j cong ket noi
    fill(Max, Max + m + 1, -oo);
    f[0][1] = 0; Max[1] = 0;
    for(int i = 1; i <= n; ++i) {
       for(int j = 0; j <= m; ++j) {
          pre = min(j + 1 - val[i].deg, m);
          if(pre < 0 || Max[pre] == -oo) continue;
          res = max(res, (f[i][j] = Max[pre] + val[i].c));
       }
       for(int j = 0; j <= m; ++j) Max[j] = max(Max[j], f[i][j]);
    }
    cout << res;
}
///4375336

Compilation message

straps.cpp: In function 'int main()':
straps.cpp:23:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
        freopen(FileName".inp", "r", stdin);
        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
straps.cpp:24:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
        freopen(FileName".out", "w", stdout);
        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 4 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 380 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 1 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 1144 KB Output is correct
3 Correct 3 ms 1144 KB Output is correct
4 Correct 3 ms 1148 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 6 ms 1144 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 74 ms 43640 KB Output is correct
9 Correct 62 ms 43640 KB Output is correct
10 Correct 75 ms 43612 KB Output is correct
11 Correct 74 ms 43640 KB Output is correct
12 Correct 251 ms 157296 KB Output is correct
13 Correct 257 ms 157148 KB Output is correct
14 Correct 257 ms 157176 KB Output is correct
15 Correct 252 ms 157304 KB Output is correct
16 Correct 267 ms 157176 KB Output is correct
17 Correct 241 ms 157232 KB Output is correct
18 Correct 222 ms 157176 KB Output is correct
19 Correct 244 ms 157224 KB Output is correct
20 Correct 259 ms 157164 KB Output is correct
21 Correct 225 ms 157128 KB Output is correct
22 Correct 226 ms 157176 KB Output is correct
23 Correct 240 ms 157252 KB Output is correct
24 Correct 220 ms 157220 KB Output is correct
25 Correct 225 ms 157200 KB Output is correct
26 Correct 225 ms 157128 KB Output is correct
27 Correct 236 ms 157240 KB Output is correct
28 Correct 225 ms 157292 KB Output is correct
29 Incorrect 252 ms 157104 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #3
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1144 KB Output is correct
2 Correct 3 ms 1144 KB Output is correct
3 Correct 3 ms 1148 KB Output is correct
4 Correct 3 ms 1144 KB Output is correct
5 Correct 3 ms 1144 KB Output is correct
6 Correct 3 ms 1148 KB Output is correct
7 Correct 3 ms 1144 KB Output is correct
8 Correct 3 ms 1144 KB Output is correct
9 Correct 61 ms 43640 KB Output is correct
10 Correct 62 ms 43640 KB Output is correct
11 Correct 61 ms 43644 KB Output is correct
12 Correct 61 ms 43640 KB Output is correct
13 Correct 61 ms 43640 KB Output is correct
14 Correct 61 ms 43640 KB Output is correct
15 Correct 61 ms 43612 KB Output is correct
16 Correct 62 ms 43868 KB Output is correct
17 Correct 222 ms 157300 KB Output is correct
18 Correct 222 ms 157148 KB Output is correct
19 Correct 223 ms 157316 KB Output is correct
20 Correct 224 ms 157276 KB Output is correct
21 Correct 225 ms 157156 KB Output is correct
22 Correct 222 ms 157220 KB Output is correct
23 Correct 221 ms 157080 KB Output is correct
24 Correct 223 ms 157180 KB Output is correct
25 Correct 240 ms 157316 KB Output is correct
26 Correct 229 ms 157244 KB Output is correct
27 Correct 223 ms 157176 KB Output is correct
28 Correct 223 ms 157176 KB Output is correct
29 Correct 223 ms 157280 KB Output is correct
30 Correct 224 ms 157228 KB Output is correct
31 Correct 223 ms 157304 KB Output is correct
32 Correct 221 ms 157176 KB Output is correct
33 Correct 239 ms 157204 KB Output is correct

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 224 ms 157296 KB Output is correct
2 Correct 225 ms 157336 KB Output is correct
3 Correct 224 ms 157228 KB Output is correct
4 Correct 223 ms 157176 KB Output is correct
5 Correct 226 ms 157176 KB Output is correct
6 Correct 226 ms 157300 KB Output is correct
7 Correct 227 ms 157276 KB Output is correct
8 Correct 225 ms 157304 KB Output is correct
9 Correct 226 ms 157304 KB Output is correct
10 Correct 224 ms 157176 KB Output is correct
11 Correct 226 ms 157304 KB Output is correct
12 Correct 226 ms 157220 KB Output is correct
13 Correct 225 ms 157160 KB Output is correct
14 Correct 225 ms 157308 KB Output is correct
15 Correct 229 ms 157176 KB Output is correct
16 Correct 226 ms 157176 KB Output is correct
17 Incorrect 246 ms 157176 KB Output isn't correct
18 Halted 0 ms 0 KB -