zoj 2505 Sticks

#include<cstdio>#include<map>#include<string.h>using namespace std;enum {    SIZ = 4100,};int mark[SIZ];int val;int fun(){    int num, pos;    int i,t;    memset(mark, 0, sizeof(mark));    val = 0;    scanf("%d", &num);    while(num --){        scanf("%d", &pos);        if(mark[pos] == 0){ mark[pos] = 1;        } else { mark[pos] = 0;        }        t = 0;        for(i=pos;i<SIZ;i++){ if(mark[i] ==0)     break; t ++;        }        for(i=pos-1;i>=0; i--){ if(mark[i] == 0)     break; t ++;        }        if(t > val) val = t;    }    return val;}int main(){    int tstcase ;    scanf("%d", &tstcase);    while(tstcase --){        printf("%dn", fun());    }return 0;}