oj.uz

Submission #980998

# Submission time Handle Problem Language Result Execution time Memory
980998 2024-05-12T17:15:28 Z salmon Boat (APIO16_boat) C++14
31 / 100
 585 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;

int N;
pair<int,int> lst[510];
int a, b;
int mod = 1'000'000'007;
long long int st[510 * 4];
vector<pair<int,int>> num;

void build(int i, int s, int e){
    st[i] = 0;

    int m = (s + e)/2;

    if(s != e){
        build(i * 2, s, m);
        build(i * 2 + 1, m + 1, e);
    }
}

void update(int i, int s, int e, int in, int k){
    st[i] += k;
    st[i] %= mod;

    if(s == e) return;

    int m = (s + e)/2;

    if(in <= m){
        update(i * 2, s , m, in , k);
    }
    else{
        update(i * 2 + 1, m + 1, e, in, k);
    }
}

long long int query(int i, int s, int e, int S, int E){
    if(S <= s && e <= E) return st[i];

    int m = (s + e)/2;
    long long int V = 0;

    if(S <= m){
        V += query(i * 2, s , m, S, E);
    }
    if(m < E){
        V += query(i * 2 + 1, m + 1, e, S, E);
    }
    return V %= mod;
}


int main(){

    scanf(" %d",&N);

    for(int i = 1; i <= N; i++){
        scanf(" %d",&a);
        scanf(" %d",&b);

        lst[i] = {a,b};

        for(int j = a; j <= b; j++){
            num.push_back({j,i});
        }
    }

    sort(num.begin(),num.end());

    build(1, 0 , N);

    int it = 0;

    update(1,0,N,0,1);

    while(it < num.size()){
        vector<int> v = {num[it].second};
        int t = num[it].first;
        it++;

        while(it < num.size() && num[it].first == t){
            v.push_back(num[it].second);
            it++;
        }

        reverse(v.begin(),v.end());

        for(int j : v){
            update(1,0,N,j, query(1,0,N, 0, j - 1));
        }
    }

    printf("%d",query(1,0,N, 0, N) - 1);
}
/*
2
1 2
2 3
*/

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:77:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |     while(it < num.size()){
      |           ~~~^~~~~~~~~~~~
boat.cpp:82:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |         while(it < num.size() && num[it].first == t){
      |               ~~~^~~~~~~~~~~~
boat.cpp:94:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   94 |     printf("%d",query(1,0,N, 0, N) - 1);
      |             ~^  ~~~~~~~~~~~~~~~~~~~~~~
      |              |                     |
      |              int                   long long int
      |             %lld
boat.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     scanf(" %d",&N);
      |     ~~~~~^~~~~~~~~~
boat.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         scanf(" %d",&a);
      |         ~~~~~^~~~~~~~~~
boat.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         scanf(" %d",&b);
      |         ~~~~~^~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 444 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 444 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 162 ms 10440 KB Output is correct
22 Correct 159 ms 10692 KB Output is correct
23 Correct 149 ms 9668 KB Output is correct
24 Correct 164 ms 10440 KB Output is correct
25 Correct 166 ms 8904 KB Output is correct
26 Correct 180 ms 9416 KB Output is correct
27 Correct 187 ms 10716 KB Output is correct
28 Correct 179 ms 8900 KB Output is correct
29 Correct 183 ms 10440 KB Output is correct
30 Correct 144 ms 9672 KB Output is correct
31 Correct 147 ms 9160 KB Output is correct
32 Correct 141 ms 8900 KB Output is correct
33 Correct 138 ms 9672 KB Output is correct
34 Correct 141 ms 9672 KB Output is correct
35 Correct 151 ms 10440 KB Output is correct
36 Correct 155 ms 10440 KB Output is correct
37 Correct 152 ms 9928 KB Output is correct
38 Correct 145 ms 9672 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 585 ms 524288 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 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 444 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 162 ms 10440 KB Output is correct
22 Correct 159 ms 10692 KB Output is correct
23 Correct 149 ms 9668 KB Output is correct
24 Correct 164 ms 10440 KB Output is correct
25 Correct 166 ms 8904 KB Output is correct
26 Correct 180 ms 9416 KB Output is correct
27 Correct 187 ms 10716 KB Output is correct
28 Correct 179 ms 8900 KB Output is correct
29 Correct 183 ms 10440 KB Output is correct
30 Correct 144 ms 9672 KB Output is correct
31 Correct 147 ms 9160 KB Output is correct
32 Correct 141 ms 8900 KB Output is correct
33 Correct 138 ms 9672 KB Output is correct
34 Correct 141 ms 9672 KB Output is correct
35 Correct 151 ms 10440 KB Output is correct
36 Correct 155 ms 10440 KB Output is correct
37 Correct 152 ms 9928 KB Output is correct
38 Correct 145 ms 9672 KB Output is correct
39 Runtime error 585 ms 524288 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -