Submission #201468

#	Time	Username	Problem	Language	Result	Execution time	Memory
201468		awlintqaa	Unija (COCI17_unija)	C++14	100 / 100	886 ms	65536 KiB

unija

#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 340
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll mod=1e9+7;
const ll inf=1e18;
const ld pai=acos(-1);
ll n;
unordered_map<ll,ll>mp;
int main(){
  fast;
        cin>>n;
        for(int i=0;i<n;i++){
                ll x,y;
                cin>>x>>y;
                mp[x]=max(mp[x],y);
        }
        vpll v;
        v.pb({0ll,0ll});
        for(auto u:mp)v.pb(u);
        sort(v.begin(),v.end());
        reverse(v.begin(),v.end());
        ll mx=0,crnt=0;
        for(ll i=0;i<v.size()-1;i++){
                mx=max(mx,v[i].se);
                crnt+=mx*(v[i].fi-v[i+1].fi);
        }
        cout<<crnt<<endl;
}

Compilation message (stderr)

unija.cpp: In function 'int main()':
unija.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(ll i=0;i<v.size()-1;i++){
                    ~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10