SRM 739 Div.2

250

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <algorithm>
using namespace std;

struct Pair {
    int val, p;
    Pair() {
    }
    Pair(int _, int __) {
        val = _, p = __;
    }
    bool operator < (Pair o) const {
        return val < o.val;
    }
};
class HungryCowsEasy {
public: 
	vector<int> findFood(vector<int> A, vector<int> C) {
		vector<int> Res;
        vector<Pair> B;
        for (int i = 0; i < C.size(); i += 1) {
            B.push_back(Pair(C[i], i));
        }
		stable_sort(B.begin(), B.end());
		for (int i = 0; i < A.size(); i += 1) {
			int p = lower_bound(B.begin(), B.end(), Pair(A[i], 0)) - B.begin();
            if (p < 0) Res.push_back(0);
            else if (p > 0 and abs(A[i] - B[p - 1].val) <= abs(A[i] - B[p].val))
                Res.push_back(B[p - 1].p);
			else if (p < B.size() - 1 and abs(B[p + 1].val - A[i]) < abs(A[i] - B[p].val))
				Res.push_back(B[p + 1].p);
			else Res.push_back(B[p].p);
		}
		return Res;
	}
};

第二题

#include<cstdio>
#include<algorithm>
#include<cstring>
#include<iostream>
#include<cctype>
#include<string>
using namespace std;

class ForumPostMedium{
public:
	string ans[3];
	ForumPostMedium() {
		ans[0] = "few seconds ago"; 
		ans[1] = " minutes ago"; 
		ans[2] = " hours ago"; 
	}
	int getid(char a,char b) {
		return (a - '0') * 10 + (b - '0');
	}
	string getShownPostTime(string t, string s) {
		int a[5], b[5];
		a[1] = getid(s[0], s[1]); a[2] = getid(s[3], s[4]); a[3] = getid(s[6], s[7]);
		b[1] = getid(t[0], t[1]); b[2] = getid(t[3], t[4]); b[3] = getid(t[6], t[7]);
		LL l = a[1] * 3600 + a[2] * 60 + a[3];
		LL r = b[1] * 3600 + b[2] * 60 + b[3];
		LL x = r - l;
		if (x < 0) x += 86400;
		if (x < 60) return ans[0];
		else if (x < 3600) return ttoo(x / 60) + ans[1];
		else return to_string(x / 3600) + ans[2];
	}
};