oj.uz

Submission #204996

# Submission time Handle Problem Language Result Execution time Memory
204996 2020-02-27T16:36:43 Z Haunted_Cpp Shell (info1cup18_shell) C++17
55 / 100
 1000 ms 15864 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <stack>
#include <algorithm>
#include <cstring>
#include <cassert>
#include <bitset>
using namespace std;
 
#define FOR(i, a, b) for (int i = a; i < (int) b; i++)
#define F0R(i, a) FOR(i, 0, a)
#define ROF(i, a, b) for (int i = a; i >= (int) b; i--)
#define R0F(i, a) ROF(i, a, 0)
#define GO(i, a) for (auto i : a)
 
#define f first
#define s second
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
typedef vector<vi> vvi;
typedef vector<vpii> vvpii;
typedef long long i64;
typedef vector<i64> vi64;
 
const int dr[] = {+1, -1, +0, +0, +1, -1, +1, -1};
const int dc[] = {+0, +0, +1, -1, +1, -1, -1, +1};
const int ms[] = {+31, +29, +31, 30, +31, +30, +31, +31, +30, +31, +30, +31};

void setIO(string nome) {
  ios_base::sync_with_stdio(0); cin.tie(0);
  freopen ((nome + ".in").c_str(), "r", stdin);
  freopen ((nome + ".out").c_str(), "w", stdout);
}

const int N = 1500 + 5;
const int M = 1500 + 5;
const int MOD = 1e9 + 7;

int n, m, k, streak [N];
int dp [N][M];
vvi g (N);

void add (int &a, int b) {
  a += b;
  while (a >= MOD) a -= MOD;
}

int solve (int node, int match) {
  if (node == n - 1) return (match == k);
  if (~dp[node][match]) return dp[node][match];
  dp[node][match] = 0;
  int target = (match < k ? streak[match] : -1); 
  GO (to, g[node]) add (dp[node][match], solve (to, match + (to == target)));
  return dp[node][match];
} 

int main () {
  ios_base::sync_with_stdio(0); 
  cin.tie(0);
  cin >> n >> m >> k;
  memset (dp, -1, sizeof(dp));
  F0R (i, k) {
    cin >> streak[i];
    --streak[i];
  }
  F0R (i, m) {
    int st, et;
    cin >> st >> et;
    --st; --et;
    g[st].eb(et);
  } 
  cout << solve (0, streak[0] == 0 ? 1 : 0) << '\n';
  return 0;
}

Compilation message

shell.cpp: In function 'void setIO(std::__cxx11::string)':
shell.cpp:39:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ((nome + ".in").c_str(), "r", stdin);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
shell.cpp:40:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ((nome + ".out").c_str(), "w", stdout);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9208 KB Output is correct
2 Correct 10 ms 9208 KB Output is correct
3 Correct 10 ms 9208 KB Output is correct
4 Correct 10 ms 9208 KB Output is correct
5 Correct 10 ms 9208 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9208 KB Output is correct
2 Correct 10 ms 9208 KB Output is correct
3 Correct 10 ms 9208 KB Output is correct
4 Correct 10 ms 9208 KB Output is correct
5 Correct 10 ms 9208 KB Output is correct
6 Correct 9 ms 9208 KB Output is correct
7 Correct 44 ms 9464 KB Output is correct
8 Correct 36 ms 9464 KB Output is correct
9 Correct 17 ms 9464 KB Output is correct
10 Correct 24 ms 9488 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9336 KB Output is correct
2 Correct 911 ms 12016 KB Output is correct
3 Correct 93 ms 11896 KB Output is correct
4 Correct 94 ms 11896 KB Output is correct
5 Correct 179 ms 11256 KB Output is correct
6 Correct 206 ms 15864 KB Output is correct
7 Execution timed out 1095 ms 15864 KB Time limit exceeded

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9208 KB Output is correct
2 Correct 10 ms 9208 KB Output is correct
3 Correct 10 ms 9208 KB Output is correct
4 Correct 10 ms 9208 KB Output is correct
5 Correct 10 ms 9208 KB Output is correct
6 Correct 9 ms 9208 KB Output is correct
7 Correct 44 ms 9464 KB Output is correct
8 Correct 36 ms 9464 KB Output is correct
9 Correct 17 ms 9464 KB Output is correct
10 Correct 24 ms 9488 KB Output is correct
11 Correct 11 ms 9336 KB Output is correct
12 Correct 911 ms 12016 KB Output is correct
13 Correct 93 ms 11896 KB Output is correct
14 Correct 94 ms 11896 KB Output is correct
15 Correct 179 ms 11256 KB Output is correct
16 Correct 206 ms 15864 KB Output is correct
17 Execution timed out 1095 ms 15864 KB Time limit exceeded