#include<bits/stdc++.h> using namespace std; #define foru(i,a,b) for(int i=(a); i<=(b); ++i) #define ford(i,a,b) for(int i=(a); i>=(b); --i) #define rep(i,a) for(int i=0; i<(a); ++i) #define sz(a) (int)(a).size() #define all(a) (a).begin(),(a).end() #define bit(s,i) (((s)>>(i))&1) #define ii pair<int,int> #define vi vector<int> #define vii vector<ii> #define fi first #define se second #define ll long long #define eb emplace_back #define pb push_back #define __builtin_popcount __builtin_popcountll #define _ << " " << template <class X, class Y> bool maxi(X &x, Y y){return x<y?x=y,true:false;} template <class X, class Y> bool mini(X &x, Y y){return x>y?x=y,true:false;} const int N=151515; int n,x[N],y[N],z[N]; bool del[N]; priority_queue<ii> X,Y,Z; void solve(){ cin>>n; foru(i,1,n){ cin>>x[i]>>y[i]>>z[i]; X.push({x[i],i}); Y.push({y[i],i}); Z.push({z[i],i}); } while(true){ if(X.empty() || Y.empty() || Z.empty()){ cout<<"-1\n"; return; } int i=X.top().se, j=Y.top().se, k=Z.top().se; if(y[i]==y[j] || z[i]==z[k]) del[i]=true; if(x[j]==x[i] || z[j]==z[k]) del[j]=true; if(x[k]==x[i] || y[k]==y[j]) del[k]=true; if(!del[i] && !del[j] && !del[k]){ cout<<x[i]+y[j]+z[k]<<'\n'; return; } while(!X.empty() && del[X.top().se]) X.pop(); while(!Y.empty() && del[Y.top().se]) Y.pop(); while(!Z.empty() && del[Z.top().se]) Z.pop(); } } int32_t main(){ #define task "test" if(fopen(task".inp", "r")){ freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); } cin.tie(0)->sync_with_stdio(0); int tc=1; //cin>>tc; foru(i,1,tc){ solve(); } }

team.cpp: In function 'int32_t main()':
team.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
team.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~