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Submission #441353

# Submission time Handle Problem Language Result Execution time Memory
441353 2021-07-05T04:55:08 Z SirCovidThe19th Sails (IOI07_sails) C++14
5 / 100
 170 ms 1744 KB 
#include <bits/stdc++.h>
using namespace std;

const int mx = 1e5+5;

int n, bit[mx], nums[mx]; pair<int, int> vals[mx]; long long ans;

void upd(int l, int r, int val){
    for (; l < mx; l += l&(-l)) bit[l] += val;
    for (++r; r < mx; r += r&(-r)) bit[r] -= val;
}
int query(int i){
    int ret = 0;
    for (; i > 0; i -= i&(-i)) ret += bit[i];
    return ret;
}

int main(){ 
    cin >> n; iota(nums, nums+mx, 0);
    for (int i = 0; i < n; i++) cin >> vals[i].first >> vals[i].second;
    sort(vals, vals+n, greater<pair<int, int>>());
    for (int i = 0; i < n; i++){
        int H = vals[i].first, S = vals[i].second, L, F; 
        L = upper_bound(nums+1, nums+H+1, query(S), [](int val, int a){ return query(a) > val; })-nums-1;
        F = lower_bound(nums+1, nums+H+1, query(S), [](int a, int val){ return query(a) < val; })-nums;
        upd(1, F-1, 1); upd(L-(S-F), L, 1);
    }for (int i = 1; i < mx; i++){
        long long q = query(i); ans += (q*(q-1))/2;
    }cout<<ans;
}

Subtask #1
5.0 / 5.0

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

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 736 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 872 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 40 ms 1028 KB Output isn't correct

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 69 ms 1276 KB Output isn't correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 120 ms 1528 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 139 ms 1700 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 170 ms 1744 KB Output isn't correct
2 Halted 0 ms 0 KB -