54 lines
949 B
Plaintext
54 lines
949 B
Plaintext
#include "sylib.h"
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int quick_read(){
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int ch = getch(); int x = 0, f = 0;
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while (ch < 48 || ch > 57){
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if (ch == 45) f = 1;
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ch = getch();
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}
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while (ch >= 48 && ch <=57){
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x = x * 10 + ch - 48;
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ch = getch();
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}
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if (f) return -x;
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else return x;
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}
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int n, m, fa[100005];
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void init(){
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int i = 1;
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while (i <= n){
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fa[i] = i;
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i = i + 1;
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}
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}
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int find(int x){
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if (fa[x] == x) return x;
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else{
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int pa = find(fa[x]);
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fa[x] = pa;
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return pa;
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}
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}
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int same(int x, int y){
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if (find(x) == find(y)) return 1;
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return 0;
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}
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int main(){
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n = quick_read(); m = quick_read();
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init();
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while (m){
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int ch = getch();
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while (ch != 81 && ch != 85){
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ch = getch();
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}
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if (ch == 81){ // query
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int x = quick_read(), y = quick_read();
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putint(same(x, y));
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putch(10);
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}else{ // union
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int x = find(quick_read()), y = find(quick_read());
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fa[x] = y;
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}
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m = m - 1;
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}
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return 0;
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} |