제출 #1355538

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1355538		raymoo_	Bitaro’s Party (JOI18_bitaro)	C++17	0 / 100	15 ms	26228 KiB

bitaro

#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pii pair<int, int>
#define bend(v) v.begin(),v.end()
#define vect vector 
#define prq priority_queue
#define umap unordered_map
#define eb emplace_back
#define pb push_back
#define pob pop_back
#define ef emplace_front
#define pf push_front
#define pof pop_front
#define el "\n"
#define deb cout<<"\nok\n";return 
#define nextl cout<<"\n"
#define lwb lower_bound 
#define upb upper_bound
#define rs resize
#define popcnt __builtin_popcountll
#define clz __builtin_clzll
#define ctz __builtin_ctzll
#define ull unsigned long long
#define ll long long 
#define dbl long double
#define int long long

#define FILE "ijustwannabepartofyourskibidi"
void IO(){
    if(fopen(FILE".in", "r")){
        freopen(FILE".in", "r", stdin);
        freopen(FILE".out", "w", stdout);
    }
    else if(fopen(FILE".inp", "r")){
        freopen(FILE".inp", "r", stdin);
        freopen(FILE".out", "w", stdout);
    }
}

const ll N = 3e5 + 1, MOD = 1e9+7, INF = 1000000000000000069;

mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

ll rand(ll l, ll r){
    return uniform_int_distribution<ll>(l, r)(rng);
}
ll pm(ll a,const int b=MOD){return (a%=b) < 0 ? a + b : a;}
ll sq(ll x){return x*x;}
ll __lcm(ll a, ll b, const ll lim=LLONG_MAX){
    if(a == -1 || b == -1)return -1;
    ll g = __gcd(a,b);
    if(b/g > lim/a)return -1;
    return (a/g)*b;
}

const int S = 167;
vect<pii> sus[N];
vect<int> G[N];

void sol(){
    int n, m, q;
    cin >> n >> m >> q;
    vect<int> in(N), blocked(N);
    for(int i=0; m>i; i++){
        int u, v;
        cin >> u >> v;
        G[u].eb(v);
        in[v]++;
    }

    queue<int> que;
    for(int i=1; n>=i; i++) if(in[i] == 0) que.push(i);

    while(que.size()){
        int u = que.front();
        que.pop();
        sus[u].eb(0, u);
        sort(bend(sus[u]), greater<pii>());
        while(sus[u].size() > S) sus[u].pob();

        for(int v : G[u]){
            for(pii p : sus[u]) sus[v].eb(p.fi+1, p.se);
            if(--in[v] == 0) que.push(v);
        }
    }

    while(q--){
        int u, x;
        cin >> u >> x;
        vect<int> v(x);
        for(int &i : v) cin >> i, blocked[i] = 1;

        int ans = -1;
        if(x < S){
            for(pii i : sus[u]) if(!blocked[i.se]){
                ans = i.fi;
                break;
            }
        }else{
            vect<int> dp(n+5);
            for(int i : v) dp[i] = -INF;
            for(int i=1; n>=i; i++){
                for(int f : G[i]) dp[f] = max(dp[f], dp[i] + 1);
            }
            ans = dp[u];
        }

        for(int i : v) blocked[i] = 0;

        cout << ans << el;
    }

}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);cout.tie(NULL);
    IO();
    int t = 1;
    // cin >> t;
    while(t--) sol();
}
/*
                                                     ...-%%%%%%%%%%%...                               
                                             .:**#%=%%%%%+........-%%%%. .                            
                                        .%%%%%%=-..%#.               .#%%.                            
                                      %%%+..      .:                    *%%.                          
                                    .%%.          :.                     :%%%%%:.                     
                                   .%%.     ...  .:                    ::     .=%%%.                  
                                 ..%%.    #%#:%. :                   :..          =%%.                
                                %%+..:  .%*::::%-::::::-::::::..   .:-%%%%.        .*%%..             
                              .%#     :.%:::::::%%%%%%%%%%%%%+...%%%+::::%#.         .%%.             
                             .%%.  ..:.%=::::*%#***#%::::::::%%%%=:::::::%%.          .%%.            
                             =%%%...-%%%:::*%********%:::%%%****%::::::::%%            .%-            
                            .%::::%%***%=:%%**********%%********%:::::::=%-:.          .%..           
                            #%:::%#*****%%**********************%:::+%%%*%%-.:      .::..%%.          
                           .%%::%%*****==**==*****#************#%%%%#******%%..::::..     .%%.        
                         .%%#%+%%***************##*+=+*==********************%%.:.         .%%        
                        .%%***%%****************#**==**==******==**+=+********%%%%%%%%%     %%.       
                      .#%#*********************%%**************++************%%::::::%*   .%%%.       
                     .%%***************#*****%%%****************************%%::::::%% .-%%%.         
                    .#%***************#****%%--%*********%*****************%#::::-%%%%%%%%%%.         
                    .%%**************#**%%%----%********%%**************#***#%%%#**%#******%*         
                   .%%**************#%%%--.....%%*******%%**************#**********#%******%%.        
                   .%%*************%%...........%%******%-%*************#***********%%*****%%.        
                   .%%*************%%...%%%%%.....%%%%%%%.=%%%%%%%%##****#****##::::+%%*****%#        
                   .%%************%%...%.   %%.................%%%%-.....%*****#*****%%*****%%        
                   .#%#*#****#****%%:::%-  %%.................%.   #-....%*****#*#####%#****%%.       
                    .%%##****%%%**%%:::::##...................%=  .%+:::%#*****#:####*%%****%%.       
                     .+%%#**%%.#%%%%::::::........###+.:*##-....%%%:::::%*****##******%%****%%-       
                       ..%%*%%.......:::.......##..#*...#+..#*....:::::%******#*****##%%*****%%.      
                        .%%%%%................#-##=--##+-+###-#....:::%******#:###*::%%#*****%%.      
                      .%%****%%..............#----------------=*...#%#****##**##::#**%%*******%%.     
                      .%%%%%*=+%%*...........#-----------------#.....#%%%%%%+:##*##:*%%*******%%%.    
                        ..:*%====%%%%........#-----------------#:.........%#********%%*****%%%%%%.    
                          .%%=======*%%%%%%%.%%+----#-%------%%#.......%%%%::::::::%%==***#%###%%.    
                         ..%%=============+%%-:#%%%%-::%%%%%%::%%%%%%%%%=%%*******%%=====**%%###%%..  
                        -%%%%%%%%%%%%%%%%+%.%+:+%::%::::%::%:::%%#%... .%%******%%%========#%####%%.  
                      .%%++#############%%# ..%%.**%%#%%%%%%%#%***%.  :%%*****%%%=+%%%%%%%%%%#####%%. 
                    .%%++++*############*++%   .%************#****%.  #%*%%%%+++%%%%###############%%.
         .+%%%%%%%%%%####+##########*+++++%%. .%**#**********#****%   %%**%%%++++###################%:
      =%%%%######################++++++++%%*%.-%%#***********#****% .%****%%+++++###################%%
   .%%%#######################*%%%%%%%%.%%*#%+%###################%.%%***%%%+++++###################%%
  *%%######################+#%%++++++%*. =%*%. .:%%%%########%%%%%%%%%#*#%.%%++#####################%%
.%%%#####################%%%%%+++++++%-  %*#%%.          .%%%*++++++*%%%....%%#####################%%*
%%######%%%%%#%%%%%######%%.%*+++++++%.  %****#.        .%%+++*+++++*++%%...=%%###################%%%.
%%%%%%%%#-=##%...%%######%%.%%+++++++%%..*%***#%%%%%. ..%+++++++++++++++%%...%%##################%%%. 
.%:.             .#%#####%%.%%+++++++++%. %*********%%%%%++++++++++++++++%%...%%##############%%%%..  
                  :%#####%% .%%+++++++%%  .%%**********%%++++++++++++++++%%.....%#########%%%%%% .    
                 *%#####%%.  .%%+++++++%%:. .%%********%%++++++++++++++++%%....%%%%%%%%%%%%*..        
                 .%%##%%%     .%%*+++++++%%. ..#%%%#****%%+++++++++++++++%%%%%% . .....               
                 %%#%%%.       .:%%%%%%%%%%%...-%. ......%%+++++++++++++%%.                           
               ..%%%.              ...     .%%%#%%%=:#%%%%%%%%*++++++%%%#                             
                                                 .-%%+.  ... .%%%%%%%:.  
*/

컴파일 시 표준 에러 (stderr) 메시지

bitaro.cpp: In function 'void IO()':
bitaro.cpp:33:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |         freopen(FILE".in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bitaro.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen(FILE".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
bitaro.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen(FILE".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bitaro.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen(FILE".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 7
• Subtask 3: 0 / 86