hihococder14(1)不等式

#include<iostream>

#include<cstdio>

#include<string.h>

#include<cstring>

#include<string>

#include<stack>

#include<set>

#include<algorithm>

#include<cmath>

#include<vector>

#include<map>

#define LOCAL

#define ll long long

#define lll unsigned long long

#define MAX 1000009

#define eps 1e-8

#define INF 0x7fffffff

#define mod 1000000007

using namespace std;

/*

题意：中文题

想法：枚举X + 0.5，然后找出最多符合x + 0.5 的语句

x>5

x<6

x可能是实数

*/

string str[59];

string X;

double num[59];

int main()

{

//freopen("date.in","r",stdin);

int n;

scanf("%d",&n);

for(int i = 0; i<n; i++)

{

cin>>X>>str[i]>>num[i];

}

int ans = -1;

for(double y = -2; y<=1009; y+=0.5)

{

int sum = 0;

for(int i = 0; i<n; i++)

{

bool ok = false;

if(str[i]=="=")

ok = (y == num[i]);

else if(str[i]=="<")

ok = (y < num[i]);

else if(str[i]==">")

ok = (y > num[i]);

else if(str[i]=="<=")

ok = (y <= num[i]);

else if(str[i]==">=")

ok = (y >= num[i]);

if(ok) sum++;

}

ans = max(ans,sum);

}

cout<<ans<<endl;

return 0;

}