usaco Friday the Thirteenth solution

usaco Friday the Thirteenth:

usaco Friday the Thirteenth solution: http://ideone.com/ClCFT6

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    int n, l=1, w[10]={0};
    scanf("%d", &n);
    for(int i=1900; i<1900+n; i++) {
        for(int j=0; j<12; j++) {
            if(j==3 || j==5 || j==8 || j==10) {
                for(int k=0; k<30; k++) {
                    l++, l%=7;
                    if(k==12) w[l]++;
                }
            }
            else if(j!=1) {
                for(int k=0; k<31; k++) {
                    l++, l%=7;
                    if(k==12) w[l]++;
                }
            }
            else {
                if(i%400==0 || (i%100!=0 && i%4==0)) {
                    for(int k=0; k<29; k++) {
                        l++, l%=7;
                        if(k==12) w[l]++;
                    }
                }
                else {
                    for(int k=0; k<28; k++) {
                        l++, l%=7;
                        if(k==12) w[l]++;
                    }
                }
            }
        }
    }
    for(int i=0; i<6; i++) printf("%d ", w[i]);
    printf("%d\n", w[6]);
    return 0;
}

note: dont forget to add your usacogate ID, PROG, LANG comment at the beginning of the code. and freopen() stuff in main() part.