oj.uz

Submission #98210

# Submission time Handle Problem Language Result Execution time Memory
98210 2019-02-21T14:30:53 Z kjain_1810 Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 1839 ms 246580 KB 
#include <bits/stdc++.h>
using namespace std;
inline int readInt() {
    int x = 0;
    char ch = getchar();
    while (ch < '0' || ch > '9') ch = getchar();
    while (ch >= '0' && ch <= '9'){
		x = (x << 3) + (x << 1) + ch - '0';
		ch = getchar();
	}
    return x;
}
 
 
int X[10000000], Y[10000000];
bool in(int a, int b){
    /// if b is under a, return true
    int x1 = X[a];
    int x2 = X[b];
    int y1 = Y[a];
    int y2 = Y[b];
    return abs(x1 - x2) <= y1 - y2;
}
int main(){
    //freopen("i.txt.txt","r",stdin);
	int n = readInt();
	for(int i = 0; i < n; i++) {
		X[i] = readInt();
		Y[i] = readInt();
		// write code here
	}
	// write code here
	//for(int i  = 0;i < n;i++){
        //printf("%d %d\n",X[i],Y[i]);
	//}
 
	stack<int> s;
 
	if(in(2,3)){
        //printf("yes");
	}
	for(int i = 0;i < n;i++){
        if(s.empty()){
            s.push(i);
            continue;
        }
 
        else if(in(s.top(),i)){
            continue;
        }
 
        else if(in(i,s.top())){
            while(!s.empty() && in(i,s.top())){
                s.pop();
            }
            s.push(i);
        }
 
        else{
            s.push(i);
        }
	}
 
	printf("%d",s.size());
	return 0;
}

Compilation message

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:64:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::stack<int>::size_type {aka long unsigned int}' [-Wformat=]
  printf("%d",s.size());
              ~~~~~~~~^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1245 ms 228832 KB Output is correct
2 Correct 1221 ms 228144 KB Output is correct
3 Correct 1228 ms 222012 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 256 KB Output is correct
10 Correct 3 ms 384 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 256 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 456 KB Output is correct
13 Correct 3 ms 384 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 256 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 456 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 45 ms 5492 KB Output is correct
15 Correct 39 ms 5240 KB Output is correct
16 Correct 42 ms 4856 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1227 ms 200320 KB Output is correct
2 Correct 1089 ms 200216 KB Output is correct
3 Correct 1076 ms 195456 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1245 ms 228832 KB Output is correct
2 Correct 1221 ms 228144 KB Output is correct
3 Correct 1228 ms 222012 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 256 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 256 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 456 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 45 ms 5492 KB Output is correct
18 Correct 39 ms 5240 KB Output is correct
19 Correct 42 ms 4856 KB Output is correct
20 Correct 1227 ms 200320 KB Output is correct
21 Correct 1089 ms 200216 KB Output is correct
22 Correct 1076 ms 195456 KB Output is correct
23 Correct 1839 ms 246580 KB Output is correct
24 Correct 1645 ms 228064 KB Output is correct
25 Correct 1387 ms 210904 KB Output is correct