Compilare: main.cpp: In function 'int main()': main.cpp:12:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1; j<=M; j++) ^~~ main.cpp:14:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=1; i<=N; i++) ^~~ main.cpp:22:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(S1<0) ^~ main.cpp:24:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' S+=S1; ^ main.cpp:31:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(S1<0) ^~ main.cpp:33:12: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' S+=S1; ^ main.cpp:9:39: warning: unused variable 'k' [-Wunused-variable] int N,M,a[17][17],S=0,S1,S0=0,i,j,k; ^