Submission #713352

#	Time	Username	Problem	Language	Result	Execution time	Memory
713352		SlavicG	Sails (IOI07_sails)	C++17	15 / 100	1079 ms	3448 KiB

sails

#include "bits/stdc++.h"
using namespace std;
 
#define ll long long

#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()

void solve() {
    //stupid tle
    int n; cin >> n;
    vector<int> a(n), b(n);
    for(int i = 0; i < n; ++i) cin >> a[i] >> b[i];
    vector<int> cnt((int)1e5 + 5, 0);
    ll ans = 0;
    for(int i = n - 1; i >= 0; --i) {
        vector<pair<int, int>> f;
        for(int j = 1; j <= a[i]; ++j) {
            f.pb({-cnt[j], j});
        }
        sort(rall(f));
        for(int j = 0; j < b[i]; ++j) {
            ans += cnt[f[j].second];
            ++cnt[f[j].second];
        }
    }
    cout << ans << '\n';
}   
 
int32_t main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) {
        solve();
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 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