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Submission #137671

# Submission time Handle Problem Language Result Execution time Memory
137671 2019-07-28T08:26:13 Z ekrem Lightning Rod (NOI18_lightningrod) C++
80 / 100
 2000 ms 76480 KB 
#include <bits/stdc++.h>
#define st first
#define nd second
#define mp make_pair
#define pb push_back
#define coc g[mode][i]
#define sol (k+k)
#define sag (k+k+1)
#define orta ((bas+son)>>1)
#define mod 1000000007
#define inf 1000000009
#define N 10000005

using namespace std;

typedef long long ll;
typedef pair < int , int > ii;
typedef pair < double , double > dd;

int n, m, result, ch;
ii a, s[N];

int readInt () {
	result = 0;
	ch;
	// ch = getchar();
	while (true) {
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		result = result*10 + (ch - '0');
	}
	return result;
}

int main(){
	// freopen("in.txt", "r", stdin);
	// freopen("out.txt", "w", stdout);
	n = readInt();
	// cout << n << endl;
	// ch = getchar();
	for(int i = 1; i <= n; i++){
		a.st = readInt();
		a.nd = readInt();
		// cout << a.st << " " << a.nd << endl;
		while(m and abs(s[m].st - a.st) <= a.nd - s[m].nd)
			m--;
		if(m and abs(s[m].st - a.st) <= s[m].nd - a.nd)
			continue;
		s[++m] = a;
	}
	printf("%d\n", m);
	return 0;
}

Compilation message

lightningrod.cpp: In function 'int readInt()':
lightningrod.cpp:25:4: warning: statement has no effect [-Wunused-value]
  ch;
    ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1682 ms 76280 KB Output is correct
2 Correct 1742 ms 76480 KB Output is correct
3 Correct 1665 ms 74412 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 52 ms 1788 KB Output is correct
15 Correct 53 ms 1916 KB Output is correct
16 Correct 45 ms 2392 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1480 ms 49152 KB Output is correct
2 Correct 1478 ms 49424 KB Output is correct
3 Correct 1438 ms 48252 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1682 ms 76280 KB Output is correct
2 Correct 1742 ms 76480 KB Output is correct
3 Correct 1665 ms 74412 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 252 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 52 ms 1788 KB Output is correct
18 Correct 53 ms 1916 KB Output is correct
19 Correct 45 ms 2392 KB Output is correct
20 Correct 1480 ms 49152 KB Output is correct
21 Correct 1478 ms 49424 KB Output is correct
22 Correct 1438 ms 48252 KB Output is correct
23 Execution timed out 2011 ms 1200 KB Time limit exceeded
24 Halted 0 ms 0 KB -