#include <string>
#include <vector>
using namespace std;
int answer;
int history=0;
vector<vector<vector<int>>> n_fares;
vector<vector<vector<int>>> list;
void update_list(int k, int n)//시작점, 길이
{
int i,j,l, min1=0,ch;
long min2=list[k][1][n-1]+1000000;
int sum=list[k][1][n-1];
for(i=0;i<n;i++){
for(j=0;j<n_fares[1][list[k][0][i]].size();j++){
ch=0;
for(l=0;l<n;l++){
if(n_fares[1][list[k][0][i]][j]==list[k][0][n-1]){
ch=1;
continue;
}
}
if(ch==1) continue;
if(min2>list[k][1][i]+n_fares[0][list[k][0][i]][j]){
min2=list[k][1][i]+n_fares[0][list[k][0][i]][j];
min1=n_fares[1][list[k][0][i]][j];
}
}
}
list[k][0].push_back(min1);
list[k][1].push_back(min2);
}
int solution(int n, int s, int a, int b, vector<vector<int>> fares) {
answer = 0;
history=0;
int i,j,k;
vector<int> ch(0,0);
n_fares.resize(2, vector<vector<int>>(n, vector<int>(0,0)));//0==값,1==도착지
list.resize(3, vector<vector<int>>(2, vector<int>(0,0)));// A/B/C,비용/지점, 길이
for(i=0;i<fares.size();i++){
n_fares[0][fares[i][0]-1].push_back(fares[i][2]);
n_fares[0][fares[i][1]-1].push_back(fares[i][2]);
n_fares[1][fares[i][0]-1].push_back(fares[i][1]-1);
n_fares[1][fares[i][1]-1].push_back(fares[i][0]-1);
}
for(i=0;i<n_fares[0].size();i++){
for(j=n_fares[0][i].size()-1;j>=0;j--){
for(k=j-1;k>=0;k--){
if(n_fares[0][i][j]<n_fares[0][i][k]){
answer=n_fares[0][i][j];
n_fares[0][i][j]=n_fares[0][i][k];
n_fares[0][i][k]=answer;
answer=n_fares[1][i][j];
n_fares[1][i][j]=n_fares[1][i][k];
n_fares[1][i][k]=answer;
}
}
}
}
answer=0;
list[0][0].push_back(s-1);
list[1][0].push_back(a-1);
list[2][0].push_back(b-1);
list[0][1].push_back(0);
list[1][1].push_back(0);
list[2][1].push_back(0);
for(i=0;i<3;i++){
update_list(0,list[0][0].size());
update_list(1,list[0][0].size());
update_list(2,list[0][0].size());
}
//return answer;
return list[0][1][1];
}
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