Submission #1049458

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049458		Dennis_Jason	Sails (IOI07_sails)	C++14	0 / 100	30 ms	2908 KiB

sails

#include <bitset>
#include <cmath>
#include <functional>
#include <algorithm>
#include <numeric>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <unordered_map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <cstring>
#include <climits>
#define int long long
#define pb push_back
#define MOD 1000000007
#define NMAX 250001
#define nl '\n'
#define INF 1000000007
#define pii1 pair<int, pair<int,int>>  (1,(1,2));
#define pii pair<int,int>
#define tpl tuple<int,int,int>
using namespace std;
ifstream fin("data.in");
ofstream fout("data.out");
/*
    --------------------DEMONSTRATION---------------------

        3-2
        5-3
        4-1
        2-1
        4-3
        3-2

        subtask 1:1<=n<=4, 1<=h<=9 ,1<=k<=4;

        5*(5+1)/2=10;
        1+2+3+4+5=15

    ------------------------END--------------------------

 */

int n,h,k;
int max_h;
vector<pii>v;

void subtask1()
{
    map<int,int>mp;

    for(int i=n;i>=1;--i)
    {
        int cnt=v[i].second;
        bool used[cnt+1];
        memset(used,false,sizeof(used));
        for(int j=v[i].first;j>=1 && cnt;--j)
        {
            if(!mp[j])
            {
                used[j]=1;
                cnt--;
                mp[j]++;
            }
        }
        if(cnt)
        {
            vector<int>aux;
            for(auto [x,y]:mp)
            {
                if(used[x] || x>v[i].first)
                    continue;
                aux.pb(x);
            }
            auto cmp=[&](int a,int b)
            {
                if(mp[a]==mp[b])
                    return a>b;
                return mp[a]<mp[b];
            };
            sort(aux.begin(), aux.end(),cmp);
            for(auto x:aux)
            {
                if(!cnt)
                    break;
                cnt--;
                mp[x]++;
            }
        }
    }
    int ans=0;
    for(int i=1;i<=max_h;++i)
    {
//        cout<<mp[i]-1<<" ";
        if(mp[i])
        {
            mp[i]--;
            ans+=(mp[i]*(mp[i]+1))/2;
        }
    }
    cout<<ans<<nl;
}
signed main() {

    cin>>n;
    v.resize(n+1);
    for(int i=1;i<=n;++i)
    {
        cin>>h>>k;
        v[i]={h,k};
        max_h=max(max_h,h);
    }
    if(n<10)
    {
        subtask1();
    }



    return 0;
}

Compilation message (stderr)

sails.cpp: In function 'void subtask1()':
sails.cpp:78:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   78 |             for(auto [x,y]:mp)
      |                      ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10