oj.uz

답안 #472448

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
472448 2021-09-13T15:19:09 Z Blobo2_Blobo2 Political Development (BOI17_politicaldevelopment) C++14
4 / 100
 27 ms 3112 KB 
/*
Editor: Abdelrahman Hossam
Nickname: Blobo2_Blobo2
IOI next year isA :)
*/
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2,tune=native")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-funroll-all-loops,-fpeel-loops,-funswitch-loops")

#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define endl "\n"
#define all(v)  v.begin(),v.end()
#define gen(arr,n,nxt)  generate(arr,arr+n,nxt)
#define Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty ios_base::sync_with_stdio(false);cin.tie(0);
#define EPS 0.00000001

const int mo=1e9+7,INF=1e18;
int nxt(){int x;cin>>x;return x;}
int now=-1;
vector<int>adj[50001];
bool vis[50001];
map<pair<int,int> ,bool>ok;
vector<int>path;
void dfs(int u, int cnt = 1){
    if(cnt == now){
        cout<<now<<endl;
        exit(0);
    }
    vis[u] = 1;
    path.push_back(u);
    for(auto v:adj[u]){
        if(!vis[v]){
            bool iwillgothere = 1;
            for(int i=0;i<path.size();i++){
                if(ok[{v,path[i]}]||ok[{path[i],v}]);
                else iwillgothere&=0;
            }
            if(iwillgothere)
                dfs(v,cnt+1);
        }
    }
    path.pop_back();
}
signed main(){
    Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty
    //freopen("in.txt","r",stdin);
    int n=nxt(),k=nxt();
    for(int i=0;i<n;i++){
        int sz = nxt();
        for(int j=0;j<sz;j++){
            int x=nxt()-1;
            adj[i].push_back(x);
            ok[{i,x}] = 1;
        }
    }
    int ans = -1;
    for(ans = k;ans>=1;ans--){
        now = ans;
        for(int i =0;i<n;i++){
            dfs(i);
            memset(vis,0,sizeof vis);
        }
    }
    return 0;
}

Compilation message

politicaldevelopment.cpp:21:24: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   21 | const int mo=1e9+7,INF=1e18;
      |                        ^~~~
politicaldevelopment.cpp: In function 'void dfs(int, int)':
politicaldevelopment.cpp:38:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |             for(int i=0;i<path.size();i++){
      |                         ~^~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1488 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 2252 KB Output is correct
4 Correct 5 ms 2268 KB Output is correct
5 Correct 5 ms 2252 KB Output is correct
6 Correct 5 ms 2364 KB Output is correct
7 Correct 5 ms 2252 KB Output is correct
8 Correct 10 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 2 ms 1484 KB Output is correct

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1488 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 2252 KB Output is correct
4 Correct 5 ms 2268 KB Output is correct
5 Correct 5 ms 2252 KB Output is correct
6 Correct 5 ms 2364 KB Output is correct
7 Correct 5 ms 2252 KB Output is correct
8 Correct 10 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 2 ms 1484 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 22 ms 3112 KB Output is correct
13 Correct 1 ms 1484 KB Output is correct
14 Correct 25 ms 3004 KB Output is correct
15 Incorrect 1 ms 1484 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 1484 KB Output is correct
2 Incorrect 2 ms 1484 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1488 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 2252 KB Output is correct
4 Correct 5 ms 2268 KB Output is correct
5 Correct 5 ms 2252 KB Output is correct
6 Correct 5 ms 2364 KB Output is correct
7 Correct 5 ms 2252 KB Output is correct
8 Correct 10 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 2 ms 1484 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 22 ms 3112 KB Output is correct
13 Correct 1 ms 1484 KB Output is correct
14 Correct 25 ms 3004 KB Output is correct
15 Incorrect 1 ms 1484 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1488 KB Output is correct
2 Correct 1 ms 1488 KB Output is correct
3 Correct 6 ms 2252 KB Output is correct
4 Correct 5 ms 2268 KB Output is correct
5 Correct 5 ms 2252 KB Output is correct
6 Correct 5 ms 2364 KB Output is correct
7 Correct 5 ms 2252 KB Output is correct
8 Correct 10 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 2 ms 1484 KB Output is correct
11 Correct 5 ms 2252 KB Output is correct
12 Correct 22 ms 3112 KB Output is correct
13 Correct 1 ms 1484 KB Output is correct
14 Correct 25 ms 3004 KB Output is correct
15 Incorrect 1 ms 1484 KB Output isn't correct
16 Halted 0 ms 0 KB -