Submission #733832

#	Time	Username	Problem	Language	Result	Execution time	Memory
733832		vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	21 / 100	1740 ms	276 KiB

Main

#include<bits/stdc++.h>
using namespace std;

int n, x, y, sx, sy, ans = 1;

void sol() {
	if(sx + sy >= x + y) {
		return;
	}
	if(sx - sy < x - y) {
		ans++;
	}
	sx = x;
	sy = y;
	return;
}

int main() {
	cin >> n;
	cin >> x >> y;
	sx = x;
	sy = y;
	for(int i = 1; i < n; i++) {
		scanf("%d", &x);
		scanf("%d", &y);
		sol();
	}
	cout << ans;
	return 0;
}

Compilation message (stderr)

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |   scanf("%d", &x);
      |   ~~~~~^~~~~~~~~~
lightningrod.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   scanf("%d", &y);
      |   ~~~~~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 7 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 26
• Subtask 6: 10 / 10
• Subtask 7: 0 / 20