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Submission #433891

# Submission time Handle Problem Language Result Execution time Memory
433891 2021-06-20T11:53:59 Z someone Boat (APIO16_boat) C++14
9 / 100
 690 ms 524292 KB 
#include <bits/stdc++.h>
using namespace std;

struct Val {
    int i, val;
};

const int M = 1 << 21, N = 2 * M, T = 500, MOD = 1e9 + 7;

int node[N];
int a[T], b[T];
vector<Val> p;

int getSum(int i) {
    if(i == 1)
        return 0;
    int sum = getSum(i/2);
    if(i % 2 == 1)
        sum += node[i-1];
    return sum % MOD;
}

void add(int i, int val) {
    if(i == 0)
        return;
    node[i] = (node[i] + val) % MOD;
    add(i/2, val);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin >> n;
    int sum = 0;
    for(int i = 0; i < n; i++) {
        cin >> a[i] >> b[i];
        sum += b[i] - a[i];
    }

    if(sum > M)
        return 0;

    for(int i = 0, x = 0; i < n; i++)
        for(int j = b[i]; j >= a[i]; j--, x++)
            p.push_back({x, j});

    sort(p.begin(), p.end(),
    [](Val v1, Val v2) {
        return v1.val < v2.val;
    });
    int pre = p[0].val;
    p[0].val = 1;
    for(int i = 1; i < n; i++) {
        bool eq = (pre != p[i].val);
        pre = p[i].val;
        p[i].val = p[i-1].val + eq;
    }

    sort(p.begin(), p.end(),
    [](Val v1, Val v2) {
        return v1.i < v2.i;
    });

    sum = 0;
    for(Val v: p) {
        int val = getSum(v.val + M) + 1;
        add(v.val + M, val);
        sum = (sum + val) % MOD;
    }
    cout << sum;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 272 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 360 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 272 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 360 KB Output is correct
21 Runtime error 175 ms 14728 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 690 ms 524292 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 272 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 360 KB Output is correct
21 Runtime error 175 ms 14728 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -