Submission #147263

#	Time	Username	Problem	Language	Result	Execution time	Memory
147263		karma	Wall (IOI14_wall)	C++11	0 / 100	702 ms	13472 KiB

wall

#include<bits/stdc++.h>

using namespace std;

const int N = int(2e6) + 7;
const int oo = int(1e9) + 7;

struct TSegment{
     int n, low, high, val;
     vector<int> st, l, h;
     TSegment(int n = 0): n(n) {
         st.resize(n << 2 | 1), l.resize(n << 2 | 1), h.resize(n << 2 | 1);
     }
     void Build(int x, int low, int high) {
          l[x] = low, h[x] = high, st[x] = 0;
          if(l[x] == h[x]) return;
          int mid = (low + high) >> 1;
          Build(x << 1, low, mid); Build(x << 1 | 1, mid + 1, high);
     }
     void Down(int x) {
          if(l[x] == h[x] && st[x] == oo) {st[x] = 0; return;}
          if(l[x] == h[x] || st[x] == -oo) return;
          if(st[x] == oo) {
            st[x << 1] = st[x << 1 | 1] = oo;
            return;
          }
          if(1ll * st[x << 1] * st[x] < 0) st[x << 1] = st[x];
          else st[x << 1] = max(st[x], st[x << 1]);
          if(1ll * st[x << 1 | 1] * st[x] < 0) st[x << 1 | 1] = st[x];
          else st[x << 1 | 1] = max(st[x], st[x << 1 | 1]);
          st[x] = -oo;
     }
     void Update(int x) {
         Down(x);
         if(l[x] > high || h[x] < low) return;
         if(l[x] >= low && h[x] <= high) {
             if(val == oo) st[x] = oo;
             else if(1ll * st[x] * val < 0) st[x] = val;
             else st[x] = max(st[x], val);
             Down(x);
             return;
         }
         Update(x << 1); Update(x << 1 | 1);
     }
     void Update(int l, int h, int v) {
         low = l, high = h, val = v;
         Update(1);
     }
     int Query(int x, int pos) {
         Down(x);
         if(l[x] > pos || h[x] < pos) return -oo;
         if(l[x] == pos && h[x] == pos) return st[x];
         return max(Query(x << 1, pos), Query(x << 1 | 1, pos));
     }
} Irene;

void buildWall(int n, int k, int op[], int lef[], int rig[], int h[], int ans[])
{
     Irene = TSegment(n);
     Irene.Build(1, 0, n - 1);
     for(int i = 0; i < k; ++i) {
        if(op[i] == 1) {
            if(h[i]) Irene.Update(lef[i], rig[i], h[i]);
        }else {
            if(h[i] == 0) Irene.Update(lef[i], rig[i], oo);
            else Irene.Update(lef[i], rig[i], -h[i]);
        }
     }
     for(int i = 0; i < n; ++i) ans[i] = abs(Irene.Query(1, i));
}

//int _n, _k, _op[N], _lef[N], _rig[N], _h[N], ans[N];
//
//int main()
//{
//    ios_base::sync_with_stdio(0);
//    cin.tie(0),cout.tie(0);
//    if(fopen("test.inp", "r")) {
//        freopen("test.inp", "r", stdin);
//        freopen("test.out", "w", stdout);
//    }
//    cin >> _n >> _k;
//    for(int i = 0; i < _k; ++i) cin >> _op[i] >> _lef[i] >> _rig[i] >> _h[i];
//    buildWall(_n, _k, _op, _lef, _rig, _h, ans);
//    for(int i = 0; i < _n; ++i) cout << ans[i] << ' ';
//}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39