ural 1149【類比】

http://acm.timus.ru/problem.aspx?space=1&num=1149

類比，不解釋。

#include <vector>#include <list>#include <map>#include <set>#include <queue>#include <string.h>#include <deque>#include <stack>#include <bitset>#include <algorithm>#include <functional>#include <numeric>#include <utility>#include <sstream>#include <iostream>#include <iomanip>#include <cstdio>#include <cmath>#include <cstdlib>#include <limits.h>using namespace std;int lowbit(int t){return t&(-t);}int countbit(int t){return (t==0)?0:(1+countbit(t&(t-1)));}int gcd(int a,int b){return (b==0)?a:gcd(b,a%b);}int max(int a,int b){return a>b?a:b;}int min(int a,int b){return a>b?b:a;}#define LL long long#define PI acos(-1.0)#define N  1000000#define INF INT_MAX#define eps 1e-8#define FRE freopen("a.txt","r",stdin)void work(int n){    int i,j;    for(i=1;i<=n;i++)    {        printf("sin");        printf("(");        if(i==n)        {            printf("%d",i);            break;        }printf("%d",i);        if(i&1)printf("-");        else        printf("+");    }    for(i=1;i<=n;i++)    printf(")");}int main(){    int n;    while(scanf("%d",&n)!=EOF)    {        int i,j;        for(i=1;i<=n-1;i++)        printf("(");        j=0;        for(i=n;i>=2;i--)        {            j++;            work(j);            printf("+");            printf("%d",i);            printf(")");        }        work(n);        printf("+1\n");    }    return 0;}