Submission #287347

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
287347	2020-08-31 16:07:20	Saboon	Teams (IOI15_teams)	C++17	100 / 100	3354 ms	104148 KiB

teams

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "teams.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn = 5e5 + 10;
const int SQRT = 2000;
int n;
vector<int> fex[maxn], fen[maxn];
void addinit(int x, int y){
  for (; x < maxn; x += x & -x)
    fex[x].push_back(y);
}
void add(int x, int y){
  for (int idx = x; idx < maxn; idx += idx & -idx){
    int idy = lower_bound(fex[idx].begin(),fex[idx].end(),y)-fex[idx].begin()+1;
    for (; idy <= fex[idx].size(); idy += idy & -idy)
      fen[idx][idy] ++;
  }
}
int get(int x, int y){
  int ret = 0;
  for (; x; x -= x & -x){
    int idy = upper_bound(fex[x].begin(),fex[x].end(),y)-fex[x].begin();
    for (;idy; idy -= idy & -idy)
      ret += fen[x][idy];
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

teams.cpp: In function 'void add(int, int)':
teams.cpp:18:76: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   18 |   int idy = lower_bound(fex[idx].begin(),fex[idx].end(),y)-fex[idx].begin()+1;
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
teams.cpp:19:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   for (; idy <= fex[idx].size(); idy += idy & -idy)
      |          ~~~~^~~~~~~~~~~~~~~~~~
teams.cpp: In function 'int get(int, int)':
teams.cpp:27:55: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   27 |   int idy = upper_bound(fex[x].begin(),fex[x].end(),y)-fex[x].begin();
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 13 / 13
• Subtask 3: 43 / 43
• Subtask 4: 23 / 23