Submission #1010810

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010810		doducanh	Sails (IOI07_sails)	C++14	30 / 100	1080 ms	7176 KiB

sails

#include <bits/stdc++.h>

using namespace std;
#define int long long
#define h first
#define k second
const int maxn=1e5+7;
pair<int,int>a[maxn];
int dem[maxn];
int n;
main()
{
    cin>>n;
    for(int i=1;i<=n;i++)cin>>a[i].h>>a[i].k;
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++){
        vector<pair<int,int>>v;
        for(int j=1;j<=a[i].h;j++){
            v.push_back({dem[j],j});
        }
        sort(v.begin(),v.end());
        for(int j=1;j<=a[i].k;j++){
            dem[v[j-1].k]++;
        }
    }
    int ans=0;
    for(int i=1;i<=100000;i++)ans+=dem[i]*(dem[i]-1)/2;
    cout<<ans;
    return 0;
}

Compilation message (stderr)

sails.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main()
      | ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 5 / 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