Submission #118856

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
118856	2019-06-19 23:55:15	tmwilliamlin168	Examination (JOI19_examination)	C++14	100 / 100	528 ms	26868 KiB

examination

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#include <bits/stdc++.h>
using namespace std;
const int mxN=1e5;
int n, q, s[mxN], t[mxN], x, a[mxN], b[mxN], c[mxN], ans[mxN];
vector<int> vs, vt[mxN+1], ft[mxN+1];
array<int, 2> d[mxN], e[mxN];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> q;
  for(int i=0; i<n; ++i) {
    cin >> s[i] >> t[i], s[i]=-s[i], t[i]=-t[i];
    vs.push_back(s[i]);
    d[i]={s[i]+t[i], i};
  }
  sort(vs.begin(), vs.end());
  vs.resize(x=unique(vs.begin(), vs.end())-vs.begin());
  for(int i=0; i<n; ++i) {
    s[i]=lower_bound(vs.begin(), vs.end(), s[i])-vs.begin();
    for(int j=s[i]+1; j<=x; j+=j&-j)
      vt[j].push_back(t[i]);
  }
  for(int i=1; i<=x; ++i) {
    sort(vt[i].begin(), vt[i].end());
    vt[i].resize(unique(vt[i].begin(), vt[i].end())-vt[i].begin());
    ft[i].resize(vt[i].size()+1);
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:40:86: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j=lower_bound(vt[i].begin(), vt[i].end(), t[d[i2][1]])-vt[i].begin()+1; j<=vt[i].size(); j+=j&-j)
                                                                                     ~^~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57