Submission #261839

#	Time	Username	Problem	Language	Result	Execution time	Memory
261839		yabsed	Werewolf (IOI18_werewolf)	C++17	15 / 100	4057 ms	23928 KiB

werewolf

#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
int ok[3][200555];
vector <int> v[200555];
int f(int N, int s, int e, int l, int r){
    queue <int> q;
    memset(ok, 0, sizeof(ok));

    if(l<=s){
        ok[1][s]=1;
        q.push(1);
        q.push(s);
    }
    if(e<=r){
        ok[0][e]=1;
        q.push(0);
        q.push(e);
    }
    while(!q.empty()){
        int type=q.front(); q.pop();
        int x=q.front(); q.pop();
        //rintf("%d %d\n", type, x);
        for(int i=0;i<v[x].size();i++){
            if(type==0){
                if(v[x][i]<=r&&ok[type][v[x][i]]==0){
                    ok[type][v[x][i]]=1;
                    q.push(type);
                    q.push(v[x][i]);
                }
            }
            else{
                if(l<=v[x][i]&&ok[type][v[x][i]]==0){
                    ok[type][v[x][i]]=1;
                    q.push(type);
                    q.push(v[x][i]);
                }
            }
        }
    }
    for(int i=0;i<N;i++)
        if(ok[0][i]&&ok[1][i])return 1;
    return 0;
}
vector<int> check_validity(int N, std::vector<int> X, std::vector<int> Y,
                                std::vector<int> S, std::vector<int> E,
                                std::vector<int> L, std::vector<int> R) {
    int Q = S.size();
    for(int i=0;i<X.size();i++){
        v[X[i]].push_back(Y[i]);
        v[Y[i]].push_back(X[i]);
    }
    vector<int> A(Q);
    for (int i = 0; i < Q; ++i) {
        A[i] = f(N, S[i], E[i], L[i], R[i]);
    }
  return A;
}

Compilation message (stderr)

werewolf.cpp: In function 'int f(int, int, int, int, int)':
werewolf.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<v[x].size();i++){
                     ~^~~~~~~~~~~~
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:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<X.size();i++){
                 ~^~~~~~~~~

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