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- #include <stdio.h>
- #include <string.h>
- int main(){
- int n,i,j,num,tanda=0;
- scanf("%d",&n);
- char arr[102];
- char ukuran;
- int angL[1023]={0};
- int angR[1023]={0};
- int angka,tandaa,tandab;
- char c;
- for(i=0;i<n;i++)
- { num=0;
- scanf("%s %c",arr,&ukuran);
- angka=0;
- for(j=0;j<strlen(arr);j++)
- {
- c= arr[j];
- //printf("%c",c);
- if(c>='0' && c<='9')
- {
- num=c-'0';
- //printf("%d",num);
- angka = angka*10 + num;
- }
- // if(tandaa<angka)tandaa=angka;
- //if(i==0)tandab=angka;
- } //printf("%d%d%d",angka,tandab,tandaa);
- if(ukuran=='L')angL[angka-1]++;
- if(ukuran=='R')angR[angka-1]++;
- // printf("%d_%d\n",angL[angka],angR[angka]);
- // if(strlen(ang[i])==1023)break;
- }
- for(i=0;i<1023;i++)
- {
- if(angR[i]<angL[i]){
- tanda+=angR[i];//printf("%d",i);
- }
- else if(angL[i]<=angR[i]) tanda+=angL[i];
- }
- printf("%d\n",tanda);
- return 0;
- }
- /*
- 5
- asd123 L
- asd123 R
- asd123 R
- fd21r L
- vrv L
- */
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