78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
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//暴力 30%point
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#include<bits/stdc++.h>
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using namespace std;
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const int MAX_NM = 2000+5;
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int p[MAX_NM][MAX_NM];
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int n,m;
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int countPoint(const int x,const int y,const int n,const int m);
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int ans=0;
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int main(int argc,char *argv[]){
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#ifdef OITEST
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#define ASEQ(a,b){if((a)!=(b)){cerr<<"assert eq failed :"<<endl<<#a<<":"<<(a)<<endl<<#b<<":"<<(b)<<endl;exit(1);}}
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#define ASNE(a,b){if((a)==(b)){cerr<<"assert not eq failed :"<<endl<<#a<<":"<<(a)<<endl<<#b<<":"<<(b)<<endl;exit(1);}}
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ASEQ(argc,3)
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ifstream ifile(argv[1]);
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ASEQ(ifile.is_open(),true)
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ifstream afile(argv[2]);
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ASEQ(afile.is_open(),true)
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#define cin ifile
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#endif
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cin>>n>>m;
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for(int i=1;i<=n;i++){
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string s;
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cin>>s;
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for(int j=1;j<=m;j++){
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p[i][j]=s[j-1];
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}
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}
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for(int i=1;i<n;i++){
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for(int j=1;j<m;j++){
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ans+=countPoint(i, j, n, m);
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}
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}
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cout<<ans<<endl;
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#ifdef OITEST
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int cans;
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afile>>cans;
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ASEQ(ans,cans)
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#endif
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}
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int countPoint(const int x,const int y,const int n,const int m){
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int ans=0;
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for(int i=x+1;i<=n;i++){
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for(int j=y+1;j<=m;j++){
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if(p[i][j]!=p[x][y]){
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break;
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}
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for(int k=i;k>=x;k--){
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if(p[k][j]!=p[x][y]){
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goto endOfj;
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}
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}
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for(int k=j;k>=y;k--){
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if(p[x][k]!=p[x][y]){
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goto endOfj;
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}
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}
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for(int k=j;k>=y;k--){
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if(p[i][k]!=p[x][y]){
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goto endOfj;
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}
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}
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for(int k=i;k>=x;k--){
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if(p[k][y]!=p[x][y]){
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goto endOfj;
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}
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}
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ans++;
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endOfj:;
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}
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}
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return ans;
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}
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