Submission #1351052

#	Time	Username	Problem	Language	Result	Execution time	Memory
1351052		Warinchai	Sails (IOI07_sails)	C++20	55 / 100	8 ms	2628 KiB

sails

#include<bits/stdc++.h>
#define int long long
using namespace std;

int h[100005];
int k[100005];
int sum[100005];
int val[100005];

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    //cerr<<"work\n";
    int n;cin>>n;
    int mx=0;
    int left=0;
    for(int i=1;i<=n;i++){
        cin>>h[i]>>k[i];
        left+=k[i];
        val[1]++;
        val[h[i]+1]--;
        mx=max(mx,h[i]);
    }
    for(int i=1;i<=mx;i++){
        val[i]+=val[i-1];
    }
    int ans=0;
    for(int i=mx;i>=1;i--){
        int want=left/i;
        int use=min(val[i],want);
        //cerr<<"i:"<<i<<" "<<use<<"\n";
        left-=use;
        ans+=(use*(use-1))/2;
    }
    cout<<ans;
}

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