Submission #295619

#	Time	Username	Problem	Language	Result	Execution time	Memory
295619		zoooma13	Werewolf (IOI18_werewolf)	C++14	15 / 100	294 ms	43512 KiB

werewolf

#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std;

vector <vector <int>> adj;
vector <int> a ,pos;
int gt(int u ,int p=-1){
    a.push_back(u);
    if(adj[u].size() == 1 && ~p)
        return u;
    if(adj[u][0] != p)
        return gt(adj[u][0] ,u);
    return gt(adj[u][1] ,u);
}

int getlastzero(int l ,int r ,int q){
    for(int i=r; i>=l; i--) if(a[i] < q)
        return i;
    return -1;
}
int getfirsttwo(int l ,int r ,int q){
    for(int i=l; i<=r; i++) if(a[i] > q)
        return i;
    return -1;
}

int ex ,pl ,pr;
bool vis[2][3000];
bool go(int u ,bool st=0){
    vis[st][u] = 1;
    if(pl <= u && u <= pr && ~st && !vis[1][u] && go(u ,1))
        return 1;
    if(st && u > pr) return 0;
    if(!st && u < pl) return 0;
    if(u == ex) return 1;
    vis[st][u] = 1;
    for(int&v : adj[u]) if(!vis[st][v] && go(v ,st))
        return 1;
    return 0;
}

vector<int> check_validity(int N, vector<int> X, vector<int> Y,vector<int> S, vector<int> E,vector<int> L, vector<int> R) {
    adj.resize(N);
    for(int i=0; i<X.size(); i++){
        adj[X[i]].push_back(Y[i]);
        adj[Y[i]].push_back(X[i]);
    }

    vector <int> ret(R.size());
    for(int q = 0; q < R.size(); q++){
        ex = E[q] ,pl = L[q] ,pr = R[q];
        memset(vis ,0 ,sizeof vis);
        ret[q] = go(S[q]);
    }
    return ret;
}

Compilation message (stderr)

werewolf.cpp: In function 'bool go(int, bool)':
werewolf.cpp:31:31: warning: '~' on an expression of type bool [-Wbool-operation]
   31 |     if(pl <= u && u <= pr && ~st && !vis[1][u] && go(u ,1))
      |                               ^~
werewolf.cpp:31:31: note: did you mean to use logical not ('!')?
werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:44:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(int i=0; i<X.size(); i++){
      |                  ~^~~~~~~~~
werewolf.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(int q = 0; q < R.size(); q++){
      |                    ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51