#include <bits/stdc++.h> using namespace std; long long int NWD(long long int a,long long int b){ while(b){ long long int c=a%b; a=b; b=c; } return a; } char cycle[1000006]; long long int n,m; long long int t[1000006]; long long int types; long long int d; long long int day=1000000000000000018LL; int main(){ ios::sync_with_stdio(0); cin>>n; for(long long int i=0;i<n;i++){ cin>>t[i]; } cin>>m; scanf("%s",cycle); long long int typ=NWD(n,m); for(long long int j=0;j<typ;j++){ vector<char>vm; long long int sumak=0; for(long long int i=0;i<m;i+=typ){ long long int temp=i+j; vm.push_back(cycle[temp]); sumak+=(cycle[temp]=='W')?1:-1; } vector<long long int>vn; for(long long int i=0;i<n;i+=typ){ vn.push_back(i+j); } // for(long long int i=0;i<vm.size();i++)cout<<vm[i]<<" "; // for(long long int i=0;i<vn.size();i++)cout<<vn[i]<<" "; //cout<<"---------"<<endl; long long int ma=1000000000000000018LL; long long int cday; bool was=false; for(long long int i=0;i<vn.size();i++){ long long int c=vn[i]; if(ma>=t[c]){ // cout<<ma; ma=t[c]; // cout<<"->"<<ma<<endl; // cout<<i<<"cday"<<endl; cday=i; } ma=ma+((vm[i%vm.size()]=='W')?1:-1); // cout<<ma<<"ma"<<endl; if(ma<=0){ long long int vnsz=vn.size(); long long int temp=vnsz*(i-cday)+cday; long long int temp2=temp*typ+j; day=min(day, temp2 ); // cout<<day<<"day"<<endl; was=true;break; } } if(!was && sumak<0){ long long int Ps=0; for(long long int i=cday;i<vm.size()+cday;i++){ if(vm[i%vm.size()]=='W'){if(Ps<0)Ps++;} else Ps--; } long long int dd=(cday)*typ+j; long long int a=t[vn[cday]]; // cout<<dd<<" "<<a<<" wombocombo"; // cout<<Ps<<" -Ps "<<sumak<<"sumaczek"<<endl; //cout<<vn.size()*vm.size()<<endl; while(a+Ps+sumak>0){ a=a+sumak; long long int temp=(vn.size()*vm.size())*typ; dd=dd+temp; } long long int i=cday; while(a>0){ // cout<<vm[i%vm.size()]<<"::"<<endl; a=a+((vm[i%vm.size()]=='W')?1:-1); // cout<<a<<" ***<<"<<dd<<endl; if(a>0){long long int temp=vn.size()*typ;dd=dd+temp;} i+=vn.size(); i=i%vm.size(); } day=min(day,dd); } } if(day==1000000000000000018LL)cout<<"-1"<<endl; else cout<<day+1<<endl; return 0; } /* 15 6 4 9 10 23 6 17 22 11 9 18 24 8 11 7 9 PPPPPWPWW */
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #include <bits/stdc++.h> using namespace std; long long int NWD(long long int a,long long int b){ while(b){ long long int c=a%b; a=b; b=c; } return a; } char cycle[1000006]; long long int n,m; long long int t[1000006]; long long int types; long long int d; long long int day=1000000000000000018LL; int main(){ ios::sync_with_stdio(0); cin>>n; for(long long int i=0;i<n;i++){ cin>>t[i]; } cin>>m; scanf("%s",cycle); long long int typ=NWD(n,m); for(long long int j=0;j<typ;j++){ vector<char>vm; long long int sumak=0; for(long long int i=0;i<m;i+=typ){ long long int temp=i+j; vm.push_back(cycle[temp]); sumak+=(cycle[temp]=='W')?1:-1; } vector<long long int>vn; for(long long int i=0;i<n;i+=typ){ vn.push_back(i+j); } // for(long long int i=0;i<vm.size();i++)cout<<vm[i]<<" "; // for(long long int i=0;i<vn.size();i++)cout<<vn[i]<<" "; //cout<<"---------"<<endl; long long int ma=1000000000000000018LL; long long int cday; bool was=false; for(long long int i=0;i<vn.size();i++){ long long int c=vn[i]; if(ma>=t[c]){ // cout<<ma; ma=t[c]; // cout<<"->"<<ma<<endl; // cout<<i<<"cday"<<endl; cday=i; } ma=ma+((vm[i%vm.size()]=='W')?1:-1); // cout<<ma<<"ma"<<endl; if(ma<=0){ long long int vnsz=vn.size(); long long int temp=vnsz*(i-cday)+cday; long long int temp2=temp*typ+j; day=min(day, temp2 ); // cout<<day<<"day"<<endl; was=true;break; } } if(!was && sumak<0){ long long int Ps=0; for(long long int i=cday;i<vm.size()+cday;i++){ if(vm[i%vm.size()]=='W'){if(Ps<0)Ps++;} else Ps--; } long long int dd=(cday)*typ+j; long long int a=t[vn[cday]]; // cout<<dd<<" "<<a<<" wombocombo"; // cout<<Ps<<" -Ps "<<sumak<<"sumaczek"<<endl; //cout<<vn.size()*vm.size()<<endl; while(a+Ps+sumak>0){ a=a+sumak; long long int temp=(vn.size()*vm.size())*typ; dd=dd+temp; } long long int i=cday; while(a>0){ // cout<<vm[i%vm.size()]<<"::"<<endl; a=a+((vm[i%vm.size()]=='W')?1:-1); // cout<<a<<" ***<<"<<dd<<endl; if(a>0){long long int temp=vn.size()*typ;dd=dd+temp;} i+=vn.size(); i=i%vm.size(); } day=min(day,dd); } } if(day==1000000000000000018LL)cout<<"-1"<<endl; else cout<<day+1<<endl; return 0; } /* 15 6 4 9 10 23 6 17 22 11 9 18 24 8 11 7 9 PPPPPWPWW */ |