Submission #1109871

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109871		ozner77	Parachute rings (IOI12_rings)	C++17	0 / 100	188 ms	262144 KiB

rings

#include <bits/stdc++.h>
using namespace std;
map<long long,long long> sumas;
vector<vector<int>> V;
vector<vector<int>> R;
long long con1=0;
int N;
void Init(int N){
    vector<int> V1(N,0);
    vector<int> J;
    for(int i=0;i<N;i++){
        V.push_back(V1);
        R.push_back(J);
    }
}
void Link(int A,int B){
    R[A].push_back(B);
    R[B].push_back(A);
    V[A][B]=1;
    V[B][A]=1;
    sumas[A]++;
    sumas[B]++;
}
void cadena(int i,int j,vector<int> visitados){
    visitados[j]=1;
    if(V[i][j]==1){
        if(sumas[j]==2){
            con1++;
        }
    }else{
        if(sumas[j]==1){
            con1++;       
        }
    }
    for(int k=0;k<R[j].size();k++){
        if(visitados[R[j][k]]==0 && R[j][k]!=i){
            cadena(i,R[j][k],visitados);
        }
    }
}
int CountCritical(){
    long long res=0;
    for(int i=0;i<N;i++){
        bool com=true;
        for(int j=0;j<N;j++){
            if(i!=j){
                if(V[i][j]==1){
                    if(sumas[j]==1){
                        continue;
                    }else if(sumas[j]>3){
                        com=false;
                        break;
                    }
                }else{
                    if(sumas[j]==0){
                        continue;
                    }else if(sumas[j]>2){
                        com=false;
                        break;
                    }else{
                        vector<int> visitados(N,0);
                        con1=0;
                        cadena(i,j,visitados);
                        if(con1!=2){
                            com=false;
                            break;
                        }
                    }
                }
            }
        }
        if(com){
            res++;
        }
    }
    return res;
}

Compilation message (stderr)

rings.cpp: In function 'void cadena(int, int, std::vector<int>)':
rings.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int k=0;k<R[j].size();k++){
      |                 ~^~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 17
• Subtask 3: 0 / 18
• Subtask 4: 0 / 14
• Subtask 5: 0 / 31