oj.uz

Submission #519648

# Submission time Handle Problem Language Result Execution time Memory
519648 2022-01-26T22:48:15 Z sofapuden Sails (IOI07_sails) C++14
100 / 100
 72 ms 7388 KB 
#include<bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int n; cin >> n;
    vector<pair<int,int>> v(n);
    for(auto &x : v)cin >> x.first >> x.second;
    set<pair<int,int>> S;
    S.insert({1,1});
	S.insert({1,2});
    int cn = 3;
    sort(v.begin(),v.end());
    for(int i = 0; i < n; ++i){

        int mx = (*S.rbegin()).first;
        int am = min(v[i].first+1,mx+v[i].second)-mx;
        if(v[i].second == am){
            S.erase(prev(S.end()));
            S.insert({mx+am,cn++});
            continue;
        }
        S.insert({mx+am,cn++});

        auto it = S.lower_bound({v[i].first-v[i].second+1,0});
		if(it == S.begin())it = next(it);
        auto it2 = prev(it);

        S.insert({(*it2).first+v[i].second-(v[i].first-(*it).first+1),cn++});

		S.erase(it);
		S.erase(it2);
        S.insert({1,cn++});

    }
    vector<int> v2;
    for(auto x : S)v2.push_back(x.first);
    reverse(v2.begin(),v2.end());
    long long ans = 0;
    for(int i = 0; i < v2.size(); ++i){
        ans += 1ll * i * (v2[i]-1);
    }
    cout << ans << '\n';
}

Compilation message

sails.cpp: In function 'int main()':
sails.cpp:42:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i = 0; i < v2.size(); ++i){
      |                    ~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 304 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 716 KB Output is correct
2 Correct 20 ms 2156 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 2124 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 3288 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 4884 KB Output is correct
2 Correct 49 ms 5868 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 5792 KB Output is correct
2 Correct 37 ms 3264 KB Output is correct

Subtask #11
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 6280 KB Output is correct
2 Correct 66 ms 7388 KB Output is correct