Submission #20584

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
20584	2017-02-12 13:25:37	kdh9949	역사적 조사 (JOI14_historical)	C++14	100 / 100	2966 ms	6804 KiB

historic

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int sz = 131072, b = 320;
int n, q, a[100010], xx[100010];
ll ans[100010];
struct Query{
  int s, e, idx;
  bool operator<(const Query &oth) const {
    return (s / b == oth.s / b) ? e < oth.e : s < oth.s;
  }
} qa[100010];
struct Seg{
  ll dat[2 * sz];
  void init(){
    for(int i = 1; i < 2 * sz; i++) dat[i] = 0;
  }
  void upd(int x, int v){
    x += sz - 1; dat[x] += v * xx[x - sz + 1];
    for(x /= 2; x; x /= 2) dat[x] = max(dat[2 * x], dat[2 * x + 1]);
  }
  ll get(){ return dat[1]; }
} S;
int main(){
  scanf("%d%d", &n, &q);
  for(int i = 1; i <= n; i++){ scanf("%d", a + i); xx[i] = a[i]; }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

historic.cpp: In function 'int main()':
historic.cpp:29:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &q);
                       ^
historic.cpp:30:49: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= n; i++){ scanf("%d", a + i); xx[i] = a[i]; }
                                                 ^
historic.cpp:33:67: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= q; i++){ scanf("%d%d", &qa[i].s, &qa[i].e); qa[i].idx = i; }
                                                                   ^

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60