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甩发代码,注意king有8个攻击范围,就是这个地方我WA了,改过来就AC了#include <stdio.h>
#include <string.h>
const int _MAXN=1005;
int n,m;
bool used[_MAXN][_MAXN];
int map[_MAXN][_MAXN];
int q,k,p;
void queen(int x,int y){
for(int i=y+1;i<=m&&map[x][i]==0;i++){
used[x][i]=true;
}
for(int i=y-1;i>=1&&map[x][i]==0;i--){
used[x][i]=true;
}
for(int i=x+1;i<=n&&map[i][y]==0;i++){
used[i][y]=true;
}
for(int i=x-1;i>=1&&map[i][y]==0;i--){
used[i][y]=true;
}
for(int k=1;x+k<=n&&y+k<=m&&map[x+k][y+k]==0;k++){
used[x+k][y+k]=true;
}
for(int k=1;x-k>=1&&y-k>=1&&map[x-k][y-k]==0;k++){
used[x-k][y-k]=true;
}
for(int k=1;x-k>=1&&y+k<=m&&map[x-k][y+k]==0;k++){
used[x-k][y+k]=true;
}
for(int k=1;x+k<=n&&y-k>=1&&map[x+k][y-k]==0;k++){
used[x+k][y-k]=true;
}
}
void king(int x,int y){
if(x+2<=n){
if(y+1<=m){
used[x+2][y+1]=true;
}
if(y-1>=1){
used[x+2][y-1]=true;
}
}
if(x-2>=1){
if(y+1<=m){
used[x-2][y+1]=true;
}
if(y-1>=1){
used[x-2][y-1]=true;
}
}
if(x+1<=n){
if(y+2<=m){
used[x+1][y+2]=true;
}
if(y-2>=1){
used[x+1][y-2]=true;
}
}
if(x-1>=1){
if(y+2<=m){
used[x-1][y+2]=true;
}
if(y-2>=1){
used[x-1][y-2]=true;
}
}
}
int main(){
int caseCount=1;
while(scanf("%d%d",&n,&m),n+m!=0){
//init
memset(used,false,sizeof(used));
memset(map,0,sizeof(map));
scanf("%d",&q);
for(int i=0;i<q;i++){
int x,y;
scanf("%d%d",&x,&y);
map[x][y]=1;
used[x][y]=true;
}
scanf("%d",&k);
for(int i=0;i<k;i++){
int x,y;
scanf("%d%d",&x,&y);
map[x][y]=2;
used[x][y]=true;
}
scanf("%d",&p);
for(int i=0;i<p;i++){
int x,y;
scanf("%d%d",&x,&y);
map[x][y]=3;
used[x][y]=true;
}
//work
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
if(map[i][j]==1){
queen(i,j);
continue;
}
if(map[i][j]==2){
king(i,j);
continue;
}
}
}
//print
int ans=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(used[i][j]==false){
++ans;
}
}
}
printf("Board %d has %d safe squares.\n",caseCount++,ans);
}
return 0;
}
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