Submission #636972

#	Time	Username	Problem	Language	Result	Execution time	Memory
636972		Metal_Sonic	Unija (COCI17_unija)	C++17	100 / 100	251 ms	54432 KiB

unija

#include <bits/stdc++.h>
#include<ext/pb_ds/tree_policy.hpp>
#include<ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
template<class T> using indexed_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
#define ll long long
#define sz(x) (int)(x).size()
#define all(x) x.begin() , x.end()
void Sonic(string name = "") {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    if(sz(name)){
        freopen((name+".in").c_str(), "r", stdin);
        freopen((name+".out").c_str(), "w", stdout);
    }
}
int xd[] = {0, 0, 1, -1, 1, 1, -1, -1};
int yd[] = {1, -1, 0, 0, 1, -1, 1, -1};
const int mxn = 1e7+5;
void run_test_case(){
    int n;cin>>n;
    vector<int>ans(mxn,0);
    for(int i = 0; i < n; i++){
        int x,y;cin>>x>>y;
        ans[x/2]=max(ans[x/2],y);
    }
    ll res = 0;
    for(int i = mxn; i >= 1; i--){
       ans[i] = max(ans[i],ans[i+1]);
       res+=ans[i];
    }
    cout<<res*2;
}
int main(){
    Sonic();
    int T = 1;
    //cin>>T;
    while(T--){
        run_test_case();
    }
    return 0;
}

Compilation message (stderr)

unija.cpp: In function 'void Sonic(std::string)':
unija.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen((name+".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
unija.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen((name+".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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