oj.uz

Submission #313318

# Submission time Handle Problem Language Result Execution time Memory
313318 2020-10-15T17:26:09 Z kaplanbar Lightning Rod (NOI18_lightningrod) C++14
100 / 100
 591 ms 157176 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int readInt() {
    int x=0;
    char ch=getchar_unlocked();
    bool s=1;
    while(ch<'0'||ch>'9'){if(ch=='-')s=0;ch=getchar_unlocked();}
    while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+ch-'0';ch=getchar_unlocked();}
    return s?x:-x;
}
int main() {
//    ios_base::sync_with_stdio(false);
//    cin.tie(0);
    int n;
    n = readInt();
    stack<int> s;
    int mx = -2e9;
    for(int i = 0; i < n; i++) {
      int x = readInt();
      int y = readInt();
      while(!s.empty() && s.top() <= y-x) {
        s.pop();
      }
      if(mx < y + x) s.push(y - x), mx = y + x;
    }
//    cout << s.size() << "\n";
    printf("%d", s.size());
    return 0;
}

Compilation message

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:28:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::stack<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   28 |     printf("%d", s.size());
      |             ~^   ~~~~~~~~
      |              |         |
      |              int       std::stack<int>::size_type {aka long unsigned int}
      |             %ld

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 388 ms 40060 KB Output is correct
2 Correct 397 ms 40016 KB Output is correct
3 Correct 375 ms 38904 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 12 ms 256 KB Output is correct
15 Correct 12 ms 256 KB Output is correct
16 Correct 11 ms 640 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 364 ms 25772 KB Output is correct
2 Correct 366 ms 25904 KB Output is correct
3 Correct 353 ms 25132 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 388 ms 40060 KB Output is correct
2 Correct 397 ms 40016 KB Output is correct
3 Correct 375 ms 38904 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 12 ms 256 KB Output is correct
18 Correct 12 ms 256 KB Output is correct
19 Correct 11 ms 640 KB Output is correct
20 Correct 364 ms 25772 KB Output is correct
21 Correct 366 ms 25904 KB Output is correct
22 Correct 353 ms 25132 KB Output is correct
23 Correct 574 ms 484 KB Output is correct
24 Correct 591 ms 157176 KB Output is correct
25 Correct 563 ms 139128 KB Output is correct