Compilare: user.cpp: In function ‘int main()’: user.cpp:25:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(i==1) dp[j][j+1]=c[v[j]][v[j+1]]; ^ user.cpp:25:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(i==1) dp[j][j+1]=c[v[j]][v[j+1]]; ^ user.cpp:33:60: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][k-1]+dp[k+1][i+j]+c[v[i]][v[k]]<dp[j][i+j]) dp[j][i+j]=dp[j+1][k-1]+dp[k+1][i+j]+c[v[j]][v[k]]; ^ user.cpp:33:66: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][k-1]+dp[k+1][i+j]+c[v[i]][v[k]]<dp[j][i+j]) dp[j][i+j]=dp[j+1][k-1]+dp[k+1][i+j]+c[v[j]][v[k]]; ^ user.cpp:33:123: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][k-1]+dp[k+1][i+j]+c[v[i]][v[k]]<dp[j][i+j]) dp[j][i+j]=dp[j+1][k-1]+dp[k+1][i+j]+c[v[j]][v[k]]; ^ user.cpp:33:129: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[j+1][k-1]+dp[k+1][i+j]+c[v[i]][v[k]]<dp[j][i+j]) dp[j][i+j]=dp[j+1][k-1]+dp[k+1][i+j]+c[v[j]][v[k]]; ^ user.cpp:9:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("redu.in","r",stdin); ^ user.cpp:10:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("redu.out","w",stdout); ^ user.cpp:12:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",v+1); ^ user.cpp:16:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(j=0;j<26;++j) scanf("%d",&c[i][j]); ^