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답안 #259780

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
259780 2020-08-08T14:07:30 Z mkisic Lamps (JOI19_lamps) C++14
47 / 100
 248 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef double lf;
typedef long double Lf;
typedef pair <int,int> pii;
typedef pair <ll, ll> pll;

#define TRACE(x) cerr << #x << "  " << x << endl
#define FOR(i, a, b) for (int i = (a); i < int(b); i++)
#define REP(i, n) FOR(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define _ << " " <<

#define fi first
#define sec second
#define mp make_pair
#define pb push_back

const int MAXN = 1000010;
const int inf = 2000000;

int n;

char s[MAXN], p[MAXN];

int dp[MAXN][4][4][4];

vector <pair <lf, int> > tmp;

void normal(vector <lf> &v) {
  tmp.clear();
  REP(i, 3) tmp.pb({v[i], i});
  sort(all(tmp));
  int cnt = 1;
  REP(i, 3) {
    if (tmp[i].fi) v[tmp[i].sec] = cnt++;
  }
}

int rek(int i, vector <lf> v) {
  normal(v);
  int a = v[0], b = v[1], c = v[2];
  if (i == n + 1) return 0;
  if (dp[i][a][b][c] != -1) return dp[i][a][b][c];

  int ret = inf;

  int t = s[i];

  if (b && b > c && b > a) t = 0;
  if (c && c > b && c > a) t = 1;
  if (a && a > b && a > c) {
    if (b && b > c) t = 1;
    if (c && c > b) t = 0;
    if (!b && !c) t = s[i] ^ 1;
  }

  if (a && b && c && t != p[i]) return dp[i][a][b][c] = inf;
  
  if (!a) {
    for (lf x = 0.5; x <= 3; x += 0.5) {
      ret = min(ret, rek(i, {x, b, c}) + 1);
    }
  }
  if (!b) {
    for (lf x = 0.5; x <= 3; x += 0.5) {
      ret = min(ret, rek(i, {a, x, c}) + 1);
    }
  }
  if (!c) {
    for (lf x = 0.5; x <= 3; x += 0.5) {
      ret = min(ret, rek(i, {a, b, x}) + 1);
    }
  }
  
  if (t == p[i]) {
    ret = min(ret, rek(i + 1, {a, b, c}));
    ret = min(ret, rek(i + 1, {0, b, c}));
    ret = min(ret, rek(i + 1, {0, 0, c}));
    ret = min(ret, rek(i + 1, {0, 0, 0}));
    ret = min(ret, rek(i + 1, {a, 0, c}));
    ret = min(ret, rek(i + 1, {a, b, 0}));
    ret = min(ret, rek(i + 1, {a, 0, 0}));
    ret = min(ret, rek(i + 1, {0, b, 0}));
  }
  return dp[i][a][b][c] = ret;
}

int main() {
  cin >> n;
  cin >> s >> p;
  REP(i, n) {
    s[i] -= '0';
    p[i] -= '0';
  }

  for (int i = n; i > 0; i--) {
    s[i] = s[i - 1];
    p[i] = p[i - 1];
  }

  memset(dp, -1, sizeof dp);
  cout << rek(1, {0, 0, 0}) << endl;

  //FOR(i, 1, n + 1) TRACE(i _ rek(i, {0, 0, 0}));

  return 0;
}

Compilation message

lamp.cpp: In function 'int rek(int, std::vector<double>)':
lamp.cpp:64:38: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
       ret = min(ret, rek(i, {x, b, c}) + 1);
                                      ^
lamp.cpp:64:38: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:64:38: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:64:38: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:69:38: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
       ret = min(ret, rek(i, {a, x, c}) + 1);
                                      ^
lamp.cpp:69:38: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:69:38: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:69:38: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:74:38: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
       ret = min(ret, rek(i, {a, b, x}) + 1);
                                      ^
lamp.cpp:74:38: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:74:38: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:74:38: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:79:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {a, b, c}));
                                        ^
lamp.cpp:79:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:79:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:79:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:79:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:79:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:80:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {0, b, c}));
                                        ^
lamp.cpp:80:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:80:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:80:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:81:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {0, 0, c}));
                                        ^
lamp.cpp:81:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:83:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {a, 0, c}));
                                        ^
lamp.cpp:83:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:83:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:83:40: warning: narrowing conversion of 'c' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:84:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {a, b, 0}));
                                        ^
lamp.cpp:84:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:84:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:84:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:85:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {a, 0, 0}));
                                        ^
lamp.cpp:85:40: warning: narrowing conversion of 'a' from 'int' to 'double' inside { } [-Wnarrowing]
lamp.cpp:86:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]
     ret = min(ret, rek(i + 1, {0, b, 0}));
                                        ^
lamp.cpp:86:40: warning: narrowing conversion of 'b' from 'int' to 'double' inside { } [-Wnarrowing]

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 250744 KB Output is correct
2 Correct 143 ms 250872 KB Output is correct
3 Correct 133 ms 250744 KB Output is correct
4 Correct 142 ms 250744 KB Output is correct
5 Correct 129 ms 250744 KB Output is correct
6 Correct 132 ms 250848 KB Output is correct
7 Correct 129 ms 250872 KB Output is correct
8 Correct 128 ms 250876 KB Output is correct
9 Correct 129 ms 250780 KB Output is correct
10 Correct 130 ms 250824 KB Output is correct
11 Correct 131 ms 250744 KB Output is correct
12 Correct 129 ms 250744 KB Output is correct
13 Correct 128 ms 250872 KB Output is correct
14 Correct 127 ms 250852 KB Output is correct
15 Correct 127 ms 251000 KB Output is correct
16 Correct 131 ms 250744 KB Output is correct
17 Correct 130 ms 250872 KB Output is correct
18 Correct 133 ms 250864 KB Output is correct
19 Correct 127 ms 250868 KB Output is correct
20 Correct 128 ms 250872 KB Output is correct
21 Correct 130 ms 250800 KB Output is correct
22 Correct 131 ms 250860 KB Output is correct
23 Correct 127 ms 250756 KB Output is correct
24 Correct 133 ms 250840 KB Output is correct
25 Correct 129 ms 250812 KB Output is correct
26 Correct 129 ms 250744 KB Output is correct
27 Correct 130 ms 250872 KB Output is correct
28 Correct 129 ms 250760 KB Output is correct
29 Correct 129 ms 250872 KB Output is correct
30 Correct 128 ms 250904 KB Output is correct
31 Correct 131 ms 250872 KB Output is correct
32 Correct 130 ms 250744 KB Output is correct
33 Correct 130 ms 250904 KB Output is correct
34 Correct 128 ms 250744 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 250744 KB Output is correct
2 Correct 143 ms 250872 KB Output is correct
3 Correct 133 ms 250744 KB Output is correct
4 Correct 142 ms 250744 KB Output is correct
5 Correct 129 ms 250744 KB Output is correct
6 Correct 132 ms 250848 KB Output is correct
7 Correct 129 ms 250872 KB Output is correct
8 Correct 128 ms 250876 KB Output is correct
9 Correct 129 ms 250780 KB Output is correct
10 Correct 130 ms 250824 KB Output is correct
11 Correct 131 ms 250744 KB Output is correct
12 Correct 129 ms 250744 KB Output is correct
13 Correct 128 ms 250872 KB Output is correct
14 Correct 127 ms 250852 KB Output is correct
15 Correct 127 ms 251000 KB Output is correct
16 Correct 131 ms 250744 KB Output is correct
17 Correct 130 ms 250872 KB Output is correct
18 Correct 133 ms 250864 KB Output is correct
19 Correct 127 ms 250868 KB Output is correct
20 Correct 128 ms 250872 KB Output is correct
21 Correct 130 ms 250800 KB Output is correct
22 Correct 131 ms 250860 KB Output is correct
23 Correct 127 ms 250756 KB Output is correct
24 Correct 133 ms 250840 KB Output is correct
25 Correct 129 ms 250812 KB Output is correct
26 Correct 129 ms 250744 KB Output is correct
27 Correct 130 ms 250872 KB Output is correct
28 Correct 129 ms 250760 KB Output is correct
29 Correct 129 ms 250872 KB Output is correct
30 Correct 128 ms 250904 KB Output is correct
31 Correct 131 ms 250872 KB Output is correct
32 Correct 130 ms 250744 KB Output is correct
33 Correct 130 ms 250904 KB Output is correct
34 Correct 128 ms 250744 KB Output is correct
35 Correct 181 ms 251740 KB Output is correct
36 Correct 160 ms 251768 KB Output is correct
37 Correct 162 ms 251768 KB Output is correct
38 Correct 164 ms 251768 KB Output is correct
39 Correct 161 ms 251256 KB Output is correct
40 Correct 168 ms 251384 KB Output is correct
41 Correct 165 ms 251256 KB Output is correct
42 Correct 159 ms 251256 KB Output is correct
43 Correct 159 ms 251256 KB Output is correct
44 Correct 159 ms 251384 KB Output is correct
45 Correct 163 ms 251384 KB Output is correct
46 Correct 161 ms 251384 KB Output is correct
47 Correct 171 ms 251384 KB Output is correct
48 Correct 164 ms 251512 KB Output is correct
49 Correct 161 ms 251516 KB Output is correct
50 Correct 176 ms 251512 KB Output is correct
51 Correct 167 ms 251512 KB Output is correct
52 Correct 160 ms 251452 KB Output is correct
53 Correct 161 ms 251512 KB Output is correct
54 Correct 161 ms 251536 KB Output is correct
55 Correct 161 ms 251464 KB Output is correct
56 Correct 182 ms 251512 KB Output is correct
57 Correct 172 ms 251512 KB Output is correct
58 Correct 161 ms 251640 KB Output is correct

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 250744 KB Output is correct
2 Correct 128 ms 250744 KB Output is correct
3 Correct 129 ms 250872 KB Output is correct
4 Correct 126 ms 250744 KB Output is correct
5 Correct 127 ms 250960 KB Output is correct
6 Correct 128 ms 250744 KB Output is correct
7 Runtime error 248 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
8 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 250744 KB Output is correct
2 Correct 143 ms 250872 KB Output is correct
3 Correct 133 ms 250744 KB Output is correct
4 Correct 142 ms 250744 KB Output is correct
5 Correct 129 ms 250744 KB Output is correct
6 Correct 132 ms 250848 KB Output is correct
7 Correct 129 ms 250872 KB Output is correct
8 Correct 128 ms 250876 KB Output is correct
9 Correct 129 ms 250780 KB Output is correct
10 Correct 130 ms 250824 KB Output is correct
11 Correct 131 ms 250744 KB Output is correct
12 Correct 129 ms 250744 KB Output is correct
13 Correct 128 ms 250872 KB Output is correct
14 Correct 127 ms 250852 KB Output is correct
15 Correct 127 ms 251000 KB Output is correct
16 Correct 131 ms 250744 KB Output is correct
17 Correct 130 ms 250872 KB Output is correct
18 Correct 133 ms 250864 KB Output is correct
19 Correct 127 ms 250868 KB Output is correct
20 Correct 128 ms 250872 KB Output is correct
21 Correct 130 ms 250800 KB Output is correct
22 Correct 131 ms 250860 KB Output is correct
23 Correct 127 ms 250756 KB Output is correct
24 Correct 133 ms 250840 KB Output is correct
25 Correct 129 ms 250812 KB Output is correct
26 Correct 129 ms 250744 KB Output is correct
27 Correct 130 ms 250872 KB Output is correct
28 Correct 129 ms 250760 KB Output is correct
29 Correct 129 ms 250872 KB Output is correct
30 Correct 128 ms 250904 KB Output is correct
31 Correct 131 ms 250872 KB Output is correct
32 Correct 130 ms 250744 KB Output is correct
33 Correct 130 ms 250904 KB Output is correct
34 Correct 128 ms 250744 KB Output is correct
35 Correct 181 ms 251740 KB Output is correct
36 Correct 160 ms 251768 KB Output is correct
37 Correct 162 ms 251768 KB Output is correct
38 Correct 164 ms 251768 KB Output is correct
39 Correct 161 ms 251256 KB Output is correct
40 Correct 168 ms 251384 KB Output is correct
41 Correct 165 ms 251256 KB Output is correct
42 Correct 159 ms 251256 KB Output is correct
43 Correct 159 ms 251256 KB Output is correct
44 Correct 159 ms 251384 KB Output is correct
45 Correct 163 ms 251384 KB Output is correct
46 Correct 161 ms 251384 KB Output is correct
47 Correct 171 ms 251384 KB Output is correct
48 Correct 164 ms 251512 KB Output is correct
49 Correct 161 ms 251516 KB Output is correct
50 Correct 176 ms 251512 KB Output is correct
51 Correct 167 ms 251512 KB Output is correct
52 Correct 160 ms 251452 KB Output is correct
53 Correct 161 ms 251512 KB Output is correct
54 Correct 161 ms 251536 KB Output is correct
55 Correct 161 ms 251464 KB Output is correct
56 Correct 182 ms 251512 KB Output is correct
57 Correct 172 ms 251512 KB Output is correct
58 Correct 161 ms 251640 KB Output is correct
59 Correct 126 ms 250744 KB Output is correct
60 Correct 128 ms 250744 KB Output is correct
61 Correct 129 ms 250872 KB Output is correct
62 Correct 126 ms 250744 KB Output is correct
63 Correct 127 ms 250960 KB Output is correct
64 Correct 128 ms 250744 KB Output is correct
65 Runtime error 248 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
66 Halted 0 ms 0 KB -