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Submission #1038537

# Submission time Handle Problem Language Result Execution time Memory
1038537 2024-07-29T22:50:24 Z pera Weighting stones (IZhO11_stones) C++17
100 / 100
 151 ms 6228 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 1e5 + 1;
int n;
vector<string> u = {">" , "<" , "?"};
struct node{
   int mn = 0 , mx = 0 , lz = 0;
};
vector<node> t(4 * N);
void push(int u){
   t[u * 2].mn += t[u].lz;
   t[u * 2 + 1].mn += t[u].lz;
   t[u * 2].mx += t[u].lz;
   t[u * 2 + 1].mx += t[u].lz;
   t[u * 2].lz += t[u].lz;
   t[u * 2 + 1].lz += t[u].lz;
   t[u].lz = 0;
}
void update(int u , int l , int r , int L , int R , int x){
   if(l > r || r < L || l > R){
      return;
   }
   if(L <= l && r <= R){
      t[u].mn += x;
      t[u].mx += x;
      t[u].lz += x;
      return;
   }
   push(u);
   int m = (l + r) / 2;
   update(u * 2 , l , m , L , R , x);
   update(u * 2 + 1 , m + 1 , r , L , R , x);
   t[u].mn = min(t[u * 2].mn , t[u * 2 + 1].mn);
   t[u].mx = max(t[u * 2].mx , t[u * 2 + 1].mx);
}
int main(){
   cin >> n;
   for(int i = 1;i <= n;i ++){
      int r , x;
      cin >> r >> x;
      update(1 , 1 , n , 1 , r , x == 1 ? 1 : -1);
      if(t[1].mn >= 0){
         cout << u[0] << endl;
         continue;
      }
      if(t[1].mx <= 0){
         cout << u[1] << endl;
         continue;
      }
      cout << u[2] << endl;
   }
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 1 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 5028 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 14 ms 5212 KB Output is correct
11 Correct 90 ms 5468 KB Output is correct
12 Correct 136 ms 5956 KB Output is correct
13 Correct 143 ms 5968 KB Output is correct
14 Correct 144 ms 5968 KB Output is correct
15 Correct 146 ms 5968 KB Output is correct
16 Correct 147 ms 5968 KB Output is correct
17 Correct 133 ms 5908 KB Output is correct
18 Correct 151 ms 5968 KB Output is correct
19 Correct 142 ms 5968 KB Output is correct
20 Correct 148 ms 5972 KB Output is correct
21 Correct 144 ms 5972 KB Output is correct
22 Correct 143 ms 5972 KB Output is correct
23 Correct 141 ms 5968 KB Output is correct
24 Correct 150 ms 6228 KB Output is correct
25 Correct 135 ms 6032 KB Output is correct