题目

代码

#include <bits/stdc++.h>
using namespace std;
const int N = 3e5+10;
unordered_map<int, int> mp;
int c, m, n;
int res;
struct grid{
    int l;
    int r;
    int pos;
    int val;
    bool explode;
    bool const operator < (const grid& a)
    {
        return pos < a.pos;
    }
} grid[N];

void solve(int i)
{
    if(++grid[i].val < 5) return;
    
    res--; grid[i].explode = true;
    
    int left = grid[i].l;
    int right = grid[i].r;
    grid[left].r = right;
    grid[right].l = left;
    if(left > 0) solve(left);
    if(!grid[right].explode && right < m+1) solve(right);
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> c >> m >> n;
    for(int i = 1; i <= m; i++)
    {
        int x, w;
        cin >> x >> w;
        
        grid[i].pos = x;
        grid[i].val = w;
    }
    sort(grid+1, grid+m+1);
    for(int i = 1; i <= m; i++)
    {
        mp[grid[i].pos] = i;
        grid[i].l = i-1;
        grid[i].r = i+1;
    }
    
    res = m;
    for(int i = 1; i <= n; i++)
    {
        int p;
        cin >> p;
        int pos = mp[p];
        //grid[pos].val++;
        solve(pos);
        cout << res << '\n';
    }
}