2019-04-14 19:36发布 生成海报
#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long ll; const int maxn = 100010; int n; ll x,m,ans,t,r; int main() { while (scanf("%d",&n)==1) { ans=0; while (n--) { scanf("%I64d%I64d",&x,&m); r=x%4; for (int i=0;i<4-r;i++) ans=ans^(x+i); r=(x+m-1)%4; for (int i=0;i
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