이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "teams.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int maxn = 5e5 + 20;
const int sq = 100;
const int maxb = 20;
int dp[maxn] , n , l[maxn] , r[maxn];
int seg[maxb][maxn] , lpt[maxb][maxn] , rpt[maxb][maxn] , cnt[sq + 5][maxn];
void build(int s = 0 , int e = n , int h = 0)
{
if(e - s < 2)
{
seg[h][s] = l[s];
return;
}
int m = (s + e) / 2;
build(s , m , h + 1);
build(m , e , h + 1);
int pt1 = s , pt2 = m , pt = s;
while(pt != e)
{
if(pt2 == e || (pt1 < m && seg[h + 1][pt1] < seg[h + 1][pt2]))
{
lpt[h][pt] = pt1;
if(pt2 == e)
rpt[h][pt] = maxn;
else
rpt[h][pt] = pt2;
seg[h][pt] = seg[h + 1][pt1++];
}
else
{
rpt[h][pt] = pt2;
if(pt1 == m)
lpt[h][pt] = maxn;
else
lpt[h][pt] = pt1;
seg[h][pt] = seg[h + 1][pt2++];
}
pt++;
}
}
inline int get(int r , int val , int s = 0 , int e = n , int h = 0)
{
int ans = 0;
val = lower_bound(seg[h] + s , seg[h] + e , val) - seg[h];
if(val == e)
return 0;
while(1)
{
if(val >= maxn)
return ans;
if(e <= r)
return ans + e - val;
if(r <= s)
return ans;
int m = (s + e) / 2;
if(r <= m)
val = lpt[h][val] , e = m , h++;
else
{
ans += max(0 , m - lpt[h][val]);
val = rpt[h][val] , s = m , h++;
}
}
}
void init(int N, int a[], int b[])
{
n = N;
vector<pair<int , int> > tmp;
for(int i = 0; i < n; i++)
{
l[i] = a[i] , r[i] = b[i];
tmp.pb({r[i] , -l[i]});
}
sort(tmp.begin() , tmp.end());
for(int i = 0; i < n; i++)
l[i] = -tmp[i].second , r[i] = tmp[i].first;
build();
for(int i = 1; i <= sq; i++)
{
int pt = 0 , t = 0;
for(int j = i; j <= n; j++)
{
while(pt < n && r[pt] <= j)
t += (l[pt++] >= i);
cnt[i][j] = t;
}
}
}
int p[maxn] , t[maxn];
int can(int m, int k[])
{
sort(k , k + m);
for(int i = 0; i < m; i++)
t[k[i]] = 0;
int sum = 0;
for(int i = 1; i <= m; i++)
{
p[i] = k[i - 1];
sum += p[i];
if(sum > n)
return 0;
t[p[i]]++;
}
m = unique(p + 1 , p + m + 1) - p - 1;
p[0] = 0;
dp[0] = 0;
for(int i = 1; i <= m; i++)
{
dp[i] = -1e9;
int x = lower_bound(r , r + n , p[i]) - r;
for(int j = i - 1; j >= 0; j--)
{
if(p[j] + 1 <= sq)
dp[i] = max(dp[i] , dp[j] + cnt[p[j] + 1][p[i] - 1]);
else
dp[i] = max(dp[i] , dp[j] + get(x , p[j] + 1));
}
dp[i] += t[p[i]] * p[i];
if(dp[i] + get(n , p[i] + 1) - n > 0)
return 0;
}
return 1;
}
컴파일 시 표준 에러 (stderr) 메시지
teams.cpp: In function 'int get(int, int, int, int, int)':
teams.cpp:57:67: warning: declaration of 'r' shadows a global declaration [-Wshadow]
inline int get(int r , int val , int s = 0 , int e = n , int h = 0)
^
teams.cpp:13:30: note: shadowed declaration is here
int dp[maxn] , n , l[maxn] , r[maxn];
^
teams.cpp:60:51: warning: conversion to 'int' from 'long int' may alter its value [-Wconversion]
val = lower_bound(seg[h] + s , seg[h] + e , val) - seg[h];
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
teams.cpp: In function 'int can(int, int*)':
teams.cpp:133:36: warning: conversion to 'int' from 'long int' may alter its value [-Wconversion]
m = unique(p + 1 , p + m + 1) - p - 1;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
teams.cpp:142:41: warning: conversion to 'int' from 'long int' may alter its value [-Wconversion]
int x = lower_bound(r , r + n , p[i]) - r;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
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