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답안 #98951

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
98951 2019-02-27T17:24:59 Z kjain_1810 Shell (info1cup18_shell) C++17
75 / 100
 263 ms 12700 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define s second
#define ind(a) scanf("%d", &a)
#define inlld(a) scanf("%lld", &a)
#define ind2(a, b) scanf("%d%d", &a, &b)
#define inlld2(a, b) scanf("%lld%lld", &a, &b)
#define ind3(a, b, c) scanf("%d%d%d", &a, &b, &c)
#define inlld3(a, b, c) scanf("%lld%lld%lld", &a, &b, &c)

using namespace std;

const int N=1505;
const int MOD=1e9+7;

typedef long long ll;
typedef long double ld;

ll n, m, p, tovis[N], visord[N];
vector<ll>adj[N];
ll vis[N], nex[N], dp[N];

void dfs(ll u)
{
    vis[u]=1;
    if(visord[u]>0)
        nex[u]=visord[u];
    else
        nex[u]=MOD;
    for(ll a=0; a<adj[u].size(); a++)
    {
        ll v=adj[u][a];
        if(!vis[v])
            dfs(v);
        nex[u]=min(nex[u], nex[v]);
    }
}

void dfs2(ll u)
{
    vis[u]=1;
    if(u==tovis[p])
    {
        dp[u]=1;
        return;
    }
    ll chk=(nex[u]==u?tovis[visord[u]+1]:nex[u]);
    for(ll a=0; a<adj[u].size(); a++)
    {
        ll v=adj[u][a];
        if(!vis[v])
            dfs2(v);
        if(nex[v]==chk)
            dp[u]=(dp[u]+dp[v])%MOD;
    }
    // printf("%lld %lld\n", u, dp[u]);
}

int main() 
{
    inlld3(n, m, p);
    for(ll a=1; a<=p; a++)
        inlld(tovis[a]);
    if(tovis[1]!=1)
    {
        for(ll a=p+1; a>=2; a--)
            tovis[a]=tovis[a-1];
        tovis[1]=1;
        p++;
    }
    if(tovis[p]!=n)
        tovis[++p]=n;
    for(ll a=1; a<=p; a++)
        visord[tovis[a]]=a;
    while(m--)
    {
        ll u, v;
        inlld2(u, v);
        adj[u].pb(v);
    }
    for(ll a=1; a<=n; a++)
        if(!vis[a])
            dfs(a);
    for(ll a=1; a<=n; a++)
    {
        vis[a]=0;
        if(nex[a]<MOD)
            nex[a]=tovis[nex[a]];
    }
    for(ll a=1; a<=n; a++)
        if(!vis[a])
            dfs2(a);
    printf("%lld\n", dp[1]);
    return 0;
}

Compilation message

shell.cpp: In function 'void dfs(ll)':
shell.cpp:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(ll a=0; a<adj[u].size(); a++)
                 ~^~~~~~~~~~~~~~
shell.cpp: In function 'void dfs2(ll)':
shell.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(ll a=0; a<adj[u].size(); a++)
                 ~^~~~~~~~~~~~~~
shell.cpp: In function 'int main()':
shell.cpp:10:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define inlld3(a, b, c) scanf("%lld%lld%lld", &a, &b, &c)
                         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
shell.cpp:62:5: note: in expansion of macro 'inlld3'
     inlld3(n, m, p);
     ^~~~~~
shell.cpp:6:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define inlld(a) scanf("%lld", &a)
                  ~~~~~^~~~~~~~~~~~
shell.cpp:64:9: note: in expansion of macro 'inlld'
         inlld(tovis[a]);
         ^~~~~
shell.cpp:8:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define inlld2(a, b) scanf("%lld%lld", &a, &b)
                      ~~~~~^~~~~~~~~~~~~~~~~~~~
shell.cpp:79:9: note: in expansion of macro 'inlld2'
         inlld2(u, v);
         ^~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 6 ms 640 KB Output is correct
9 Correct 9 ms 896 KB Output is correct
10 Correct 11 ms 768 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 111 ms 5672 KB Output is correct
3 Correct 146 ms 5784 KB Output is correct
4 Correct 128 ms 5876 KB Output is correct
5 Correct 62 ms 4088 KB Output is correct
6 Correct 263 ms 12700 KB Output is correct
7 Correct 222 ms 12536 KB Output is correct

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 6 ms 640 KB Output is correct
9 Correct 9 ms 896 KB Output is correct
10 Correct 11 ms 768 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 111 ms 5672 KB Output is correct
13 Correct 146 ms 5784 KB Output is correct
14 Correct 128 ms 5876 KB Output is correct
15 Correct 62 ms 4088 KB Output is correct
16 Correct 263 ms 12700 KB Output is correct
17 Correct 222 ms 12536 KB Output is correct
18 Execution timed out 3 ms 384 KB Time limit exceeded (wall clock)
19 Halted 0 ms 0 KB -