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FT!!!N开小了In Reply To:我的想法是每次查询的时候,就回退找原来的插入操作,如果插入位置小于查询位置,查询位置--,如果等于查询位置就输出,为什么WA呢? Posted by:yiyiyi4321 at 2006-07-30 23:14:21 > #include<stdio.h> > > #define M 1000011 > #define N 1011 > > char s[M],op[N][4],ch[N][4],ans; > int loc[N], i, j, n, len; > > int main() > { > gets(s); > len = strlen(s); > scanf("%d",&n); > for(i = 0; i < n; i ++) > { > scanf("%1s",op[i]); > if(op[i][0]=='Q') > { > scanf("%d",&loc[i]); > ans='\0'; > for(j = i - 1; j >= 0; j -- ) > { > if(op[j][0]=='I') > { > if(loc[j] < loc[i])loc[i]--; > else if(loc[j] ==loc[i]){ > ans=ch[j][0]; > break; > } > } > } > if(ans=='\0')ans=s[loc[i]-1]; > putchar(ans);putchar('\n'); > } > else if(op[i][0]=='I') > { > scanf("%1s%d",ch[i],&loc[i]); > if(loc[i] > len)loc[i] = len + 1; > len ++; > } > } > return 0; > } Followed by:
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