Submission #78700

#	Time	Username	Problem	Language	Result	Execution time	Memory
78700		Vardanyan	Sails (IOI07_sails)	C++14	30 / 100	1076 ms	7700 KiB

sails

#include <bits/stdc++.h>
using namespace std;
const int N = 100*1000+7;
pair<int,int> a[N];
int d[N];
int main(){
    int n;
    scanf("%d",&n);
    int H = 0;
    for(int i = 1;i<=n;i++){
        scanf("%d%d",&a[i].first,&a[i].second);
        H = max(H,a[i].first);
    }
    sort(a+1,a+1+n);
    set<pair<int,int> > ms;
    for(int i = 1;i<=H;i++){
        ms.insert({0,i});
    }
    for(int i = 1;i<=n;i++){
        set<pair<int,int> >::iterator it = ms.begin();
        int c = 0;
        vector<pair<int,int> > v;
        for(;it!=ms.end();it++){
            pair<int,int> x = *it;
            if(x.second<=a[i].first) c++;
            else continue;
            //ms.erase(ms.find(x));
            v.push_back(x);
            if(c >= a[i].second) break;
        }
        for(int j = 0;j<v.size();j++){
                ms.erase(ms.find(v[j]));
                v[j].first++;
                ms.insert(v[j]);
        }
    }
    long long ans = 0;
    for(set<pair<int,int> >::iterator it = ms.begin();it!=ms.end();it++){
         pair<int,int> x = *it;
         long long u = x.first;
         u*=(u-1);
         u/=2;
         ans+=u;
    }
    cout<<ans<<endl;
    return 0;
}

Compilation message (stderr)

sails.cpp: In function 'int main()':
sails.cpp:31:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0;j<v.size();j++){
                       ~^~~~~~~~~
sails.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
sails.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&a[i].first,&a[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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