1、数列分段

题目链接：https://sim.csp.thusaac.com/contest/5/problem/0

区分每一段的方法就是判断数列中的每一个数是否与前一个数相等。

100分代码：

#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{int n;cin >> n;int a[1010] = {1010};for(int i = 1; i <= n; i++){cin >> a[i];}int ans = 0;for(int i = 1; i <= n; i++){if(a[i] != a[i-1])ans++;}cout << ans << endl;return 0;
}

评测结果：

2、日期计算

题目链接：https://sim.csp.thusaac.com/contest/5/problem/1

言简意赅，按照题意模拟即可。

100分代码：

#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{int year,day;cin >> year >> day;int month1[12] = {31,28,31,30,31,30,31,31,30,31,30,31};int month2[12] = {31,29,31,30,31,30,31,31,30,31,30,31};int sum  = 0; if(year % 4 == 0 && year % 100 != 0 || year % 400 == 0){for(int i = 0; i < 12; i++){sum += month2[i];if(sum >= day){cout << i+1 << endl;cout << day - (sum - month2[i]) << endl;break;}}}	else {for(int i = 0; i < 12; i++){sum += month1[i];if(sum >= day){cout << i+1 << endl;cout << day - (sum - month1[i]) << endl;break;}}}return 0;
}

评测结果：