//Source.cpp //いつもの #ifdef LOCAL #define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #else #include #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #ifdef ONLINE_JUDGE #include using namespace atcoder; /*#else #define gcd __gcd #define lcm __detail::__lcm*/ #endif #endif using namespace std; typedef long long ll; typedef unsigned long long ull; #ifdef LOCAL //* #include using namespace atcoder; //*/ unsigned popcount(unsigned x){ return __popcnt(x); } unsigned popcountll(ull x){ return __popcnt64(x); } unsigned parity(unsigned x){ return popcount(x)%2; } unsigned parityll(ull x){ return popcountll(x)%2; } unsigned clz(unsigned x){ if(x==0) throw; unsigned cnt=__lzcnt(x); return cnt; } unsigned clzll(ull x){ if(x==0) throw; unsigned cnt=__lzcnt64(x); return cnt; } unsigned ctz(unsigned x){ if(x==0) throw; x&=~x+1; unsigned cnt=0; if(x&0xffff0000) cnt|=16; if(x&0xff00ff00) cnt|=8; if(x&0xf0f0f0f0) cnt|=4; if(x&0xcccccccc) cnt|=2; if(x&0xaaaaaaaa) cnt|=1; return cnt; } unsigned ctzll(ull x){ if(x==0) throw; x&=~x+1; unsigned cnt=0; if(x&0xffffffff00000000) cnt|=32; if(x&0xffff0000ffff0000) cnt|=16; if(x&0xff00ff00ff00ff00) cnt|=8; if(x&0xf0f0f0f0f0f0f0f0) cnt|=4; if(x&0xcccccccccccccccc) cnt|=2; if(x&0xaaaaaaaaaaaaaaaa) cnt|=1; return cnt; } unsigned ffs(unsigned x){ if(x==0) return 0; return ctz(x)+1; } unsigned ffsll(ull x){ if(x==0) return 0; return ctzll(x)+1; } #define __builtin_popcount popcount #define __builtin_popcountll popcountll #define __builtin_parity parity #define __builtin_parityll parityll #define __builtin_clz clz #define __builtin_clzll clzll #define __builtin_ctz ctz #define __builtin_ctzll ctzll #define __builtin_ffs ffs #define __builtin_ffsll ffsll #endif constexpr int mod=1e9+7; constexpr int Mod=998244353; constexpr int inf=mod; constexpr ll linf=(ll)mod*mod; struct fastio{ fastio(){ cin.tie(0); ios::sync_with_stdio(0); cout< bool chmax(T&a,const T&b){ if(a bool chmin(T&a,const T&b){ if(a>b){ a=b; return 1; } return 0; } int main(){ int n; string s,t; cin>>n>>s>>t; int ans=0; for(int i=0;i