Submission #1164256

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1164256	2025-03-09 09:28:02	ChottuF	Lightning Rod (NOI18_lightningrod)	C++20	0 / 100	0 ms	0 KiB

Main

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#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    int pref[n], suff[n];
    for (int i = 0; i < n; i++) {
        int x, y;
        cin >> x >> y;
        pref[i] = x + y;
        suff[i] = y - x;
        if (i > 0)
            pref[i] = max(pref[i], pref[i - 1]);
    }
    int ans = 0;
    for (int i = n - 1; i >= 0; i--) {
        ans += ((i == 0) || pref[i] > pref[i - 1]) && ((i == n - 1) || suff[i] > suff[i + 1]);
        if (i != n - 1)
            suff[i] = max(suff[i], suff[i + 1]);
 
 
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• Subtask 1: 0 / 100