제출 #287649

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
287649		b00n0rp	팀들 (IOI15_teams)	C++17	21 / 100	4073 ms	8952 KiB

teams

#include "teams.h"
#include<bits/stdc++.h>
using namespace std;

#define pii pair<int,int>
#define F first
#define S second

const int MAXN = 500005;
const int LIM = 10000;

int n;
pii a[MAXN];
int dp[MAXN];

void init(int N, int A[], int B[]){
	n = N;
	for(int i = 0; i < n; i ++){
		a[i] = {A[i],B[i]};
	}
	sort(a,a+n);
}

int query(int l,int r,int val){
	int res = 0;
	for(int i = l; i <= r; i++){
		if(a[i].S >= val) res++;
	}
	return res;
}

int can(int M, int K[]) {
	sort(K,K+M);
	if(M > LIM){
		return 0;
	}
	else{
		dp[0] = 0;
		for(int i = 1; i <= M; i ++){
			dp[i] = n+1;
			for(int j = 0; j < i; j ++){
				// dp[j] + (No. of kids (A, B) satisfying K[j-1] < A <= K[i-1] and B >= K[i-1]))-K[i-1]
				int ind1 = (j?(lower_bound(a,a+n,make_pair(K[j-1]+1,-1))-a):0);
				int ind2 = (lower_bound(a,a+n,make_pair(K[i-1]+1,-1))-a)-1;
				dp[i] = min(dp[i],dp[j]-K[i-1]+query(ind1,ind2,K[i-1]));
			}
			if(dp[i] < 0) return 0;
			// cout << i << " " << dp[i] << endl;
		}
		return 1;
	}
}

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In function 'int can(int, int*)':
teams.cpp:43:18: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
   43 |     int ind1 = (j?(lower_bound(a,a+n,make_pair(K[j-1]+1,-1))-a):0);
      |                ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
teams.cpp:44:61: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
   44 |     int ind2 = (lower_bound(a,a+n,make_pair(K[i-1]+1,-1))-a)-1;
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~

• Subtask 1: 21 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23