Atcoder训练计划

争取三天做完一套吧，太简单的就写一句话题解吧(其实也没多少会做的)。

自己做出来的在前面用*标记

agc007

*A - Shik and Stone

暴力dfs即可，直接判断个数

*B - Construct Sequences

https://www.cnblogs.com/zwfymqz/p/9706027.html

C - Pushing Balls

https://www.cnblogs.com/zwfymqz/p/9707414.html

agc015

*A - A+...+B Problem

结论题。

#include<cstdio>
#include<iostream>
#define LL long long 
using namespace std;
main() {
     LL N, A, B;
     cin >> N >> A >> B;
     cout << max((LL)0, (N - 1) * B + A - (N - 1) * A - B + 1);
    return 0;
}

*B - Evilator

大力特判

#include<cstdio>
#include<iostream>
#include<cstring>
#define LL long long 
using namespace std;
const int MAXN = 1e5 + 10;
char s[MAXN];
main() {
    scanf("%s", s + 1);
    int N = strlen(s + 1);
    LL ans = 0;
    for(int i = 1; i <= N; i++) {
        if(s[i] == 'U') ans += (N - i) + (i - 1) * 2;
        else ans += (N - i) * 2 + (i - 1);
    }
    cout << ans;
    return 0;
}

C - Nuske vs Phantom Thnook

https://www.cnblogs.com/zwfymqz/p/9681405.html

D - A or...or B Problem

https://www.cnblogs.com/zwfymqz/p/9670530.html

E - Mr.Aoki Incubator

https://www.cnblogs.com/zwfymqz/p/9711735.html

F - Kenus the Ancient Greek

https://www.cnblogs.com/zwfymqz/p/9677497.html

agc016

*A - Shrinking

https://www.cnblogs.com/zwfymqz/p/9677907.html

B - Colorful Hats

https://www.cnblogs.com/zwfymqz/p/9681405.html

C - +/- Rectangle

https://www.cnblogs.com/zwfymqz/p/9681961.html