Submission #74980

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
74980	2018-09-07 20:44:56	Vardanyan	Weighting stones (IZhO11_stones)	C++14	100 / 100	113 ms	15172 KiB

stones

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//#pragma GCC optimize "-O3"
#include <bits/stdc++.h>
using namespace std;
const int N = 100*1000+7;
pair<int,int> t[4*N];
int f[4*N];
void push(int v, int s, int e) {
  if (f[v]) {
    t[v].first += (1*f[v]);
    t[v].second += (1*f[v]);
    if (s != e) {
      f[v*2] += f[v];
      f[v*2 + 1] += f[v];
    }
    f[v] = 0;
  }
}
void update(int v, int s, int e, int l, int r, int val) {
  push(v, s, e);
  if(l>r) return;
  if (s == l && e == r) {
    f[v] += val;
    push(v, s, e);
    return;
  }
  int m = (s + e) / 2;
  update(v*2, s, m, l, min(m,r), val);
  update(v*2 + 1, m + 1, e, max(l,m+1), r, val);
  push(v*2,s,m);
 
 
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Compilation message (stderr)

stones.cpp: In function 'int main()':
stones.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
stones.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&r,&s);
         ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 100 / 100