Submission #674747

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
674747	2022-12-26 06:21:18	QwertyPi	Lasers (NOI19_lasers)	C++14	100 / 100	391 ms	54504 KiB

lasers

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#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
using namespace std;
int32_t main(){
  int l, r; cin >> l >> r;
  vector<pair<int, int>> block;
  for(int i = 0; i < r; i++){
    int k; cin >> k; int s = 0;
    vector<int> a; vector<pair<int, int>> d;
    for(int j = 0; j < k; j++){
      int v; cin >> v; a.push_back(v);
    }
    auto add = [&d, &l] (int sl, int sr){
      d.push_back({0, 1});
      d.push_back({sl, -1});
      d.push_back({l - sr, 1});
      d.push_back({l, -1});
    };
    int sl = 0, sr = accumulate(a.begin(), a.end(), 0LL);
    add(sl, sr);
    for(auto i : a){
      sl += i; sr -= i;
      add(sl, sr);
    }
    sort(d.begin(), d.end());
    int cnt = 0;
    for(auto i : d){
 
 
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Compilation message (stderr)

lasers.cpp: In function 'int32_t main()':
lasers.cpp:11:24: warning: unused variable 's' [-Wunused-variable]
   11 |   int k; cin >> k; int s = 0;
      |                        ^

• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 22 / 22
• Subtask 6: 13 / 13