#include <time.h>
#include <cstdlib>
#include <stack>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <map>
#include <set>
#include <iterator>
#include <deque>
#include <queue>
#include <sstream>
#include <array>
#include <string>
#include <tuple>
#include <chrono>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <list>
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <bitset>
using namespace std;
int tt = 1, n, m;
vector<pair<int, int>> g[200005];
pair<int, int> p[200005];
map<pair<int, int>, int> mp, pos;
set<pair<int, int>> st;
// int init()
int getMinimumFuelCapacity(int X, int Y){
X++;
Y++;
if(n <= 3)
return -1;
int mx = 0;
if(X != 1) mx = mp[{1, X}];
if(Y != 1) mx = max(mx, mp[{1, Y}]);
if(X != 1) st.erase({mp[{1, X}], pos[{1, X}]});
if(Y != 1) st.erase({mp[{1, Y}], pos[{1, Y}]});
pair<int, int> p = *st.begin();
st.erase(st.begin());
if(X != 1 && Y != 1){
st.insert(p);
if(X != 1) st.insert({mp[{1, X}], pos[{1, X}]});
if(Y != 1) st.insert({mp[{1, Y}], pos[{1, Y}]});
return max(mx, p.first);
}
else{
pair<int, int> p1 = *st.begin();
st.insert(p1);
st.insert(p);
if(X != 1) st.insert({mp[{1, X}], pos[{1, X}]});
if(Y != 1) st.insert({mp[{1, Y}], pos[{1, Y}]});
return max({mx, p.first, p1.first});
}
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
cin >> n >> m;
for(int i = 1; i <= m; i++){
int a, b, c;
cin >> a >> b >> c;
a++;
b++;
g[a].push_back({b, c});
g[b].push_back({a, c});
mp[{a, b}] = c;
mp[{b, a}] = c;
pos[{a, b}] = i;
pos[{b, a}] = i;
st.insert({c, i});
}
cin >> tt;
while(tt--){
int x, y;
cin >> x >> y;
cout << getMinimumFuelCapacity(x, y) << "\n";
}
}
Compilation message
/usr/bin/ld: /tmp/cc9aDSGe.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccY37IRe.o:swap.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cc9aDSGe.o: in function `main':
grader.cpp:(.text.startup+0x1c3): undefined reference to `init(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status
