Submission #204233

#	Time	Username	Problem	Language	Result	Execution time	Memory
204233		Segtree	Teams (IOI15_teams)	C++14	21 / 100	126 ms	24532 KiB

teams

#include"teams.h"
#include<iostream>
#include<algorithm>
#include<vector>
#include<queue>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
#define rep(i,n) for(int i=0;i<n;i++)
#define mod 1000000007
#define mad(a,b) a=(a+b)%mod

#define NS 110
vector<P> v;
int dat[NS];
void init(int N,int A[],int B[]){
	rep(i,N)v.push_back(make_pair(B[i],A[i]));
	sort(v.begin(),v.end());
	rep(i,NS)dat[i]=0;
}

void add(int K){
	rep(i,v.size()){
		if(v[i].second<=K&&dat[i]==0)dat[i]=1;
	}
}
void erase(int n){
	for(int i=0;i<=n;i++){
		if(dat[i]==1)dat[i]=2;
	}
}
int sum(int n){
	ll res=0;
	for(int i=0;i<=n;i++){
		res+=(dat[i]==1);
	}
	return res;
}

int can(int M,int K[]){
	rep(i,NS)dat[i]=0;
	sort(K,K+M);
	rep(i,M){
		add(K[i]);
		ll l,r,mid;
		l=-1,r=v.size();
		while(l<r-1){
			mid=(l+r)>>1;
			(v[mid].first<K[i]?l:r)=mid;
		}
		erase(l);
		l=-1,r=v.size();
		while(l<r-1){
			mid=(l+r)>>1;
			(sum(mid)>=K[i]?r:l)=mid;
		}
		if(r==v.size())return 0;
		erase(r);
	}
	return 1;
}
/*
int main(){
	int n,a[110],b[110];
	cin>>n;
	rep(i,n)cin>>a[i]>>b[i];
	init(n,a,b);
	while(1){
		int m,k[110];
		cin>>m;
		rep(i,m)cin>>k[i];
		cout<<(can(m,k)?"YES":"NO")<<endl;
	}
}*/

Compilation message (stderr)

teams.cpp: In function 'void add(int)':
teams.cpp:11:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,n) for(int i=0;i<n;i++)
teams.cpp:25:6:
  rep(i,v.size()){
      ~~~~~~~~~~                
teams.cpp:25:2: note: in expansion of macro 'rep'
  rep(i,v.size()){
  ^~~
teams.cpp: In function 'int sum(int)':
teams.cpp:39:9: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
  return res;
         ^~~
teams.cpp: In function 'int can(int, int*)':
teams.cpp:53:10: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
   erase(l);
          ^
teams.cpp:57:12: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
    (sum(mid)>=K[i]?r:l)=mid;
            ^
teams.cpp:59:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(r==v.size())return 0;
      ~^~~~~~~~~~
teams.cpp:60:10: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
   erase(r);
          ^

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