ZOJ 3326 An Awful Problem 模拟

只有在 Month 和 Day 都为素数的时候才能得到糖

那就模拟一遍时间即可.

//#pragma comment(linker, "/STACK:16777216") //for c++ Compiler
#include <stdio.h>
#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <stack>
#include <string>
#include <map>
#include <set>
#include <list>
#include <queue>
#include <vector>
#include <algorithm>
#define Max(a,b) (((a) > (b)) ? (a) : (b))
#define Min(a,b) (((a) < (b)) ? (a) : (b))
#define Abs(x) (((x) > 0) ? (x) : (-(x)))
#define MOD 1000000007
#define pi acos(-1.0)

using namespace std;

typedef long long           ll      ;
typedef unsigned long long  ull     ;
typedef unsigned int        uint    ;
typedef unsigned char       uchar   ;

template<class T> inline void checkmin(T &a,T b){if(a>b) a=b;}
template<class T> inline void checkmax(T &a,T b){if(a<b) a=b;}

const double eps = 1e-7      ;
const int N = 210            ;
const int M = 1100011*2      ;
const ll P = 10000000097ll   ;
const int MAXN = 10900000    ;

int month1[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int month2[13] = {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

bool run (int x) {
    if (x % 4 == 0 && x % 100 != 0 || x % 400 == 0) return true;
    return false;
}

bool prime (int num){
    if (num == 1)    return false;
    for (int i = 2; i <= sqrt(num); ++i){
        if (num % i == 0)    return false;
    }
    return true;
}

int main() {
    std::ios::sync_with_stdio(false);
    int i, j, t, k, u, v, numCase = 0;
    int y1, y2, m1, m2, d1, d2;
    cin >> t;
    while (t--) { 
        cin >> y1 >> m1 >> d1 >> y2 >> m2 >> d2;
        int ans = 0;
        while (y1 < y2) {
            if (!run (y1)){
                for (; m1 <= 12; ++m1) {
                    for (; d1 <= month1[m1]; ++d1){
                        if (prime(m1) && prime(d1))   ++ans;
                    }
                    d1 = 1;
                }
            } else{
                for (; m1 <= 12; ++m1) {
                    for (; d1 <= month2[m1]; ++d1) {
                        if (prime(m1) && prime(d1))   ++ans;
                    }
                    d1 = 1;
                }
            }
            m1 = 1;
            ++y1;
        }
        if (!run (y1)) {
            for (; m1 < m2; ++m1) { 
                for (; d1 <= month1[m1]; ++d1) {
                    if (prime(m1) && prime(d1))   ++ans;
                }
                d1 = 1;
            }
            for (; d1 <= d2; ++d1) {
                if (prime(m2) && prime(d1))   ++ans;
            }
        } else{
            for (; m1 < m2; ++m1) {
                for (; d1 <= month2[m1]; ++d1) {
                    if(prime(m1) && prime(d1))   ++ans;
                }
                d1 = 1;
            }
            for (; d1 <= d2; ++d1) {
                if(prime(m2) && prime(d1))   ++ans;
            }
        }
        cout << ans << endl;
    }

    return 0;
}