Submission #1083948

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083948		steveonalex	Sails (IOI07_sails)	C++17	0 / 100	1070 ms	2528 KiB

sails

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
#define block_of_code if(true)
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double cur = rngesus(0, MASK(60) - 1);
    cur /= MASK(60) - 1;
    return l + cur * (r - l);
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }


int main(void){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    clock_t start = clock();

    const int N = 1e5 + 69;

    int n; cin >> n;
    vector<pair<int, int>> a(n);
    for(int i = 0; i<n; ++i) cin >> a[i].first >> a[i].second;

    sort(ALL(a));

    priority_queue<int, vector<int>, greater<int>> pq;
    int last = 0;
    for(pair<int, int> i: a){
        while(last < i.first){
            pq.push(0);
            last++;
        }
        while(i.second--){
            int u = pq.top(); pq.pop();
            pq.push(u+1);
        }
    }

    ll ans = 0;
    while(pq.size()){
        int u = pq.top(); pq.pop();
        ans += 1LL * u * (u-1) / 2;
    }
    cout << ans << "\n";

    cerr << "Time elapsed: " << clock() - start << " ms\n";
    return 0;
}

Compilation message (stderr)

sails.cpp: In function 'int main()':
sails.cpp:60:15: warning: unused variable 'N' [-Wunused-variable]
   60 |     const int N = 1e5 + 69;
      |               ^

• 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