提出 #73212392

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ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b)for(int i=a;i<(int)b;i++)
#define rrep(i,a,b)for(int i=a;i>(int)b;i--)
#define R(a) rep(i,0,a)
#define RR(a,b) rep(i,0,a)rep(j,0,b)
#define RRR(a,b,c) RR(a,b)rep(k,0,c)
#define el '\n'
#define YN(p) cout << (p?"Yes":"No") << el;
#define SU(p) cout << (p) << el;
#define CU(p) cerr << p << el;
#define PU(p) cout << p.first << ' ' << p.second << el;
template<typename T> inline void VU_function(vector<T> a){R(a.size())cout << a[i] << (i!=a.size()-1?' ':el);}
#define VU(p) VU_function( p);
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define Toup(s) transform(all(s),s.begin(),[](char c){return toupper(c);})
#define Tolow(s) transform(all(s),s.begin(),[](char c){return tolower(c);})
#define fix() cout << fixed << setprecision(12);
template <typename T> inline bool chmin(T& a, const T& b) {bool compare = a > b; if (a > b) a = b; return compare;}
template <typename T> inline bool chmax(T& a, const T& b) {bool compare = a < b; if (a < b) a = b; return compare;}
using ll = long long;
using ull = unsigned long long;
const int inf = 1073041824;
const ll INFL=1LL<<60;
const ll mod= 998244353;
const ll MOD=1000000007;
bool ok=false;
const int fj[4]={0,1,0,-1};//上右下左
const int fi[4]={-1,0,1,0};

void sol(){
    int n;
    cin >> n;
    char c='P';
    int ans=0;
    R(n){
        char l,r;
        cin >> l >> r;
        if(c==l)ans++;
        c=r;
    }
    SU(ans)
}

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int t=1;
    //t=3;

    while(t--){
        sol();
        cout.flush();
    }
}

提出情報

ジャッジ結果